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Finding the Fourth Proportional to 572,007.60, 858,011.40 and 478,695.60

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Solution

The fourth proportional to 572,007.60, 858,011.40 and 478,695.60 is: 718,043.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,007.60 : 858,011.40 = 478,695.60 : x
  2. Step 2: Convert to fraction form
    572,007.60/858,011.40 = 478,695.60/x
  3. Step 3: Cross multiply
    572,007.60x = 858,011.40 × 478,695.60
  4. Step 4: Simplify right side
    572,007.60x = 410,726,281,929.84
  5. Step 5: Solve for x
    x = 410,726,281,929.84/572,007.60
  6. Step 6: Final answer
    x = 718,043.40

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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.