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Finding the Fourth Proportional to 680,723.73, 939,655.73 and 535,149.72

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Solution

The fourth proportional to 680,723.73, 939,655.73 and 535,149.72 is: 738,708.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,723.73 : 939,655.73 = 535,149.72 : x
  2. Step 2: Convert to fraction form
    680,723.73/939,655.73 = 535,149.72/x
  3. Step 3: Cross multiply
    680,723.73x = 939,655.73 × 535,149.72
  4. Step 4: Simplify right side
    680,723.73x = 502,856,500,805.90
  5. Step 5: Solve for x
    x = 502,856,500,805.90/680,723.73
  6. Step 6: Final answer
    x = 738,708.64

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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.