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Finding the Fourth Proportional to 572,711.10, 859,066.65 and 480,090.30

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Solution

The fourth proportional to 572,711.10, 859,066.65 and 480,090.30 is: 720,135.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,711.10 : 859,066.65 = 480,090.30 : x
  2. Step 2: Convert to fraction form
    572,711.10/859,066.65 = 480,090.30/x
  3. Step 3: Cross multiply
    572,711.10x = 859,066.65 × 480,090.30
  4. Step 4: Simplify right side
    572,711.10x = 412,429,565,718.50
  5. Step 5: Solve for x
    x = 412,429,565,718.50/572,711.10
  6. Step 6: Final answer
    x = 720,135.45

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Half scale
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Double scale
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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.