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Finding the Fourth Proportional to 605,295.68, 907,472.86 and 391,612.10

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Solution

The fourth proportional to 605,295.68, 907,472.86 and 391,612.10 is: 587,113.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,295.68 : 907,472.86 = 391,612.10 : x
  2. Step 2: Convert to fraction form
    605,295.68/907,472.86 = 391,612.10/x
  3. Step 3: Cross multiply
    605,295.68x = 907,472.86 × 391,612.10
  4. Step 4: Simplify right side
    605,295.68x = 355,377,346,881.21
  5. Step 5: Solve for x
    x = 355,377,346,881.21/605,295.68
  6. Step 6: Final answer
    x = 587,113.64

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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.