Home / 1,277,952,008.80-1,916,928,013.20-512,596,386.40

Finding the Fourth Proportional to 1,277,952,008.80, 1,916,928,013.20 and 512,596,386.40

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Solution

The fourth proportional to 1,277,952,008.80, 1,916,928,013.20 and 512,596,386.40 is: 768,894,579.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,952,008.80 : 1,916,928,013.20 = 512,596,386.40 : x
  2. Step 2: Convert to fraction form
    1,277,952,008.80/1,916,928,013.20 = 512,596,386.40/x
  3. Step 3: Cross multiply
    1,277,952,008.80x = 1,916,928,013.20 × 512,596,386.40
  4. Step 4: Simplify right side
    1,277,952,008.80x = 982,610,372,555,251,456
  5. Step 5: Solve for x
    x = 982,610,372,555,251,456/1,277,952,008.80
  6. Step 6: Final answer
    x = 768,894,579.60

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Double scale
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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.