Home / 485,701.30-727,774.35-307,890.10

Finding the Fourth Proportional to 485,701.30, 727,774.35 and 307,890.10

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Solution

The fourth proportional to 485,701.30, 727,774.35 and 307,890.10 is: 461,342.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,701.30 : 727,774.35 = 307,890.10 : x
  2. Step 2: Convert to fraction form
    485,701.30/727,774.35 = 307,890.10/x
  3. Step 3: Cross multiply
    485,701.30x = 727,774.35 × 307,890.10
  4. Step 4: Simplify right side
    485,701.30x = 224,074,517,398.94
  5. Step 5: Solve for x
    x = 224,074,517,398.94/485,701.30
  6. Step 6: Final answer
    x = 461,342.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.