Home / 485,517,008.30-728,275,512.45-429,396,838.70

Finding the Fourth Proportional to 485,517,008.30, 728,275,512.45 and 429,396,838.70

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Solution

The fourth proportional to 485,517,008.30, 728,275,512.45 and 429,396,838.70 is: 644,095,258.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,517,008.30 : 728,275,512.45 = 429,396,838.70 : x
  2. Step 2: Convert to fraction form
    485,517,008.30/728,275,512.45 = 429,396,838.70/x
  3. Step 3: Cross multiply
    485,517,008.30x = 728,275,512.45 × 429,396,838.70
  4. Step 4: Simplify right side
    485,517,008.30x = 312,719,202,748,652,480
  5. Step 5: Solve for x
    x = 312,719,202,748,652,480/485,517,008.30
  6. Step 6: Final answer
    x = 644,095,258.05

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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.