Home / 717,252.90-989,815.86-394,974.42

Finding the Fourth Proportional to 717,252.90, 989,815.86 and 394,974.42

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Solution

The fourth proportional to 717,252.90, 989,815.86 and 394,974.42 is: 545,068.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,252.90 : 989,815.86 = 394,974.42 : x
  2. Step 2: Convert to fraction form
    717,252.90/989,815.86 = 394,974.42/x
  3. Step 3: Cross multiply
    717,252.90x = 989,815.86 × 394,974.42
  4. Step 4: Simplify right side
    717,252.90x = 390,951,945,210.30
  5. Step 5: Solve for x
    x = 390,951,945,210.30/717,252.90
  6. Step 6: Final answer
    x = 545,068.48

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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.