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Finding the Fourth Proportional to 713,379.10, 984,451.98 and 391,091.85

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Solution

The fourth proportional to 713,379.10, 984,451.98 and 391,091.85 is: 539,700.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,379.10 : 984,451.98 = 391,091.85 : x
  2. Step 2: Convert to fraction form
    713,379.10/984,451.98 = 391,091.85/x
  3. Step 3: Cross multiply
    713,379.10x = 984,451.98 × 391,091.85
  4. Step 4: Simplify right side
    713,379.10x = 385,011,141,172.10
  5. Step 5: Solve for x
    x = 385,011,141,172.10/713,379.10
  6. Step 6: Final answer
    x = 539,700.62

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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.