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Finding the Fourth Proportional to 607,320.60, 910,397.70 and 472,309.80

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Solution

The fourth proportional to 607,320.60, 910,397.70 and 472,309.80 is: 708,011.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,320.60 : 910,397.70 = 472,309.80 : x
  2. Step 2: Convert to fraction form
    607,320.60/910,397.70 = 472,309.80/x
  3. Step 3: Cross multiply
    607,320.60x = 910,397.70 × 472,309.80
  4. Step 4: Simplify right side
    607,320.60x = 429,989,755,607.46
  5. Step 5: Solve for x
    x = 429,989,755,607.46/607,320.60
  6. Step 6: Final answer
    x = 708,011.15

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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.