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Finding the Fourth Proportional to 715,293.87, 987,978.81 and 534,806.23

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Solution

The fourth proportional to 715,293.87, 987,978.81 and 534,806.23 is: 738,685.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,293.87 : 987,978.81 = 534,806.23 : x
  2. Step 2: Convert to fraction form
    715,293.87/987,978.81 = 534,806.23/x
  3. Step 3: Cross multiply
    715,293.87x = 987,978.81 × 534,806.23
  4. Step 4: Simplify right side
    715,293.87x = 528,377,217,756.09
  5. Step 5: Solve for x
    x = 528,377,217,756.09/715,293.87
  6. Step 6: Final answer
    x = 738,685.52

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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.