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Finding the Fourth Proportional to 713,520.63, 984,650.85 and 391,229.73

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Solution

The fourth proportional to 713,520.63, 984,650.85 and 391,229.73 is: 539,892.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,520.63 : 984,650.85 = 391,229.73 : x
  2. Step 2: Convert to fraction form
    713,520.63/984,650.85 = 391,229.73/x
  3. Step 3: Cross multiply
    713,520.63x = 984,650.85 × 391,229.73
  4. Step 4: Simplify right side
    713,520.63x = 385,224,686,189.77
  5. Step 5: Solve for x
    x = 385,224,686,189.77/713,520.63
  6. Step 6: Final answer
    x = 539,892.85

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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.