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Finding the Fourth Proportional to 729,930.31, 999,987.90 and 702,639.40

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Solution

The fourth proportional to 729,930.31, 999,987.90 and 702,639.40 is: 962,599.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,930.31 : 999,987.90 = 702,639.40 : x
  2. Step 2: Convert to fraction form
    729,930.31/999,987.90 = 702,639.40/x
  3. Step 3: Cross multiply
    729,930.31x = 999,987.90 × 702,639.40
  4. Step 4: Simplify right side
    729,930.31x = 702,630,896,306.66
  5. Step 5: Solve for x
    x = 702,630,896,306.66/729,930.31
  6. Step 6: Final answer
    x = 962,599.97

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.