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Finding the Fourth Proportional to 713,559.70, 984,712.62 and 391,263.10

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Solution

The fourth proportional to 713,559.70, 984,712.62 and 391,263.10 is: 539,943.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,559.70 : 984,712.62 = 391,263.10 : x
  2. Step 2: Convert to fraction form
    713,559.70/984,712.62 = 391,263.10/x
  3. Step 3: Cross multiply
    713,559.70x = 984,712.62 × 391,263.10
  4. Step 4: Simplify right side
    713,559.70x = 385,281,712,310.32
  5. Step 5: Solve for x
    x = 385,281,712,310.32/713,559.70
  6. Step 6: Final answer
    x = 539,943.21

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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.