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Finding the Fourth Proportional to 572,001.10, 858,001.65 and 478,689.10

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Solution

The fourth proportional to 572,001.10, 858,001.65 and 478,689.10 is: 718,033.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,001.10 : 858,001.65 = 478,689.10 : x
  2. Step 2: Convert to fraction form
    572,001.10/858,001.65 = 478,689.10/x
  3. Step 3: Cross multiply
    572,001.10x = 858,001.65 × 478,689.10
  4. Step 4: Simplify right side
    572,001.10x = 410,716,037,637.02
  5. Step 5: Solve for x
    x = 410,716,037,637.02/572,001.10
  6. Step 6: Final answer
    x = 718,033.65

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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.