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Finding the Fourth Proportional to 527,792.60, 728,336.07 and 312,805.03

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Solution

The fourth proportional to 527,792.60, 728,336.07 and 312,805.03 is: 431,660.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,792.60 : 728,336.07 = 312,805.03 : x
  2. Step 2: Convert to fraction form
    527,792.60/728,336.07 = 312,805.03/x
  3. Step 3: Cross multiply
    527,792.60x = 728,336.07 × 312,805.03
  4. Step 4: Simplify right side
    527,792.60x = 227,827,186,226.43
  5. Step 5: Solve for x
    x = 227,827,186,226.43/527,792.60
  6. Step 6: Final answer
    x = 431,660.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.