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Finding the Fourth Proportional to 680,722.73, 939,654.35 and 535,148.72

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Solution

The fourth proportional to 680,722.73, 939,654.35 and 535,148.72 is: 738,707.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,722.73 : 939,654.35 = 535,148.72 : x
  2. Step 2: Convert to fraction form
    680,722.73/939,654.35 = 535,148.72/x
  3. Step 3: Cross multiply
    680,722.73x = 939,654.35 × 535,148.72
  4. Step 4: Simplify right side
    680,722.73x = 502,854,824,581.88
  5. Step 5: Solve for x
    x = 502,854,824,581.88/680,722.73
  6. Step 6: Final answer
    x = 738,707.26

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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.