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Finding the Fourth Proportional to 717,465.71, 990,172.66 and 535,862.49

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Solution

The fourth proportional to 717,465.71, 990,172.66 and 535,862.49 is: 739,542.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,465.71 : 990,172.66 = 535,862.49 : x
  2. Step 2: Convert to fraction form
    717,465.71/990,172.66 = 535,862.49/x
  3. Step 3: Cross multiply
    717,465.71x = 990,172.66 × 535,862.49
  4. Step 4: Simplify right side
    717,465.71x = 530,596,387,117.52
  5. Step 5: Solve for x
    x = 530,596,387,117.52/717,465.71
  6. Step 6: Final answer
    x = 739,542.50

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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.