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Finding the Fourth Proportional to 713,508.04, 984,633.72 and 391,217.59

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Solution

The fourth proportional to 713,508.04, 984,633.72 and 391,217.59 is: 539,876.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,508.04 : 984,633.72 = 391,217.59 : x
  2. Step 2: Convert to fraction form
    713,508.04/984,633.72 = 391,217.59/x
  3. Step 3: Cross multiply
    713,508.04x = 984,633.72 × 391,217.59
  4. Step 4: Simplify right side
    713,508.04x = 385,206,030,971.14
  5. Step 5: Solve for x
    x = 385,206,030,971.14/713,508.04
  6. Step 6: Final answer
    x = 539,876.23

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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.