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Finding the Fourth Proportional to 717,540.57, 990,276 and 535,937.56

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Solution

The fourth proportional to 717,540.57, 990,276 and 535,937.56 is: 739,646.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,540.57 : 990,276 = 535,937.56 : x
  2. Step 2: Convert to fraction form
    717,540.57/990,276 = 535,937.56/x
  3. Step 3: Cross multiply
    717,540.57x = 990,276 × 535,937.56
  4. Step 4: Simplify right side
    717,540.57x = 530,726,100,690.87
  5. Step 5: Solve for x
    x = 530,726,100,690.87/717,540.57
  6. Step 6: Final answer
    x = 739,646.12

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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.