Home / 1,277,952,068.30-1,916,928,102.45-512,596,445.90

Finding the Fourth Proportional to 1,277,952,068.30, 1,916,928,102.45 and 512,596,445.90

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Solution

The fourth proportional to 1,277,952,068.30, 1,916,928,102.45 and 512,596,445.90 is: 768,894,668.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,952,068.30 : 1,916,928,102.45 = 512,596,445.90 : x
  2. Step 2: Convert to fraction form
    1,277,952,068.30/1,916,928,102.45 = 512,596,445.90/x
  3. Step 3: Cross multiply
    1,277,952,068.30x = 1,916,928,102.45 × 512,596,445.90
  4. Step 4: Simplify right side
    1,277,952,068.30x = 982,610,532,361,701,120
  5. Step 5: Solve for x
    x = 982,610,532,361,701,120/1,277,952,068.30
  6. Step 6: Final answer
    x = 768,894,668.85

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Half scale
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Double scale
Find fourth proportional to 1,277,952,069.30, 1,916,928,103.95 and 512,596,446.90
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.