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Finding the Fourth Proportional to 521,527.60, 721,024.30 and 385,346.76

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Solution

The fourth proportional to 521,527.60, 721,024.30 and 385,346.76 is: 532,751.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,527.60 : 721,024.30 = 385,346.76 : x
  2. Step 2: Convert to fraction form
    521,527.60/721,024.30 = 385,346.76/x
  3. Step 3: Cross multiply
    521,527.60x = 721,024.30 × 385,346.76
  4. Step 4: Simplify right side
    521,527.60x = 277,844,377,886.27
  5. Step 5: Solve for x
    x = 277,844,377,886.27/521,527.60
  6. Step 6: Final answer
    x = 532,751.05

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1.5x scale

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.