Home / 485,516,267.80-728,274,401.70-429,396,098.20

Finding the Fourth Proportional to 485,516,267.80, 728,274,401.70 and 429,396,098.20

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Solution

The fourth proportional to 485,516,267.80, 728,274,401.70 and 429,396,098.20 is: 644,094,147.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,516,267.80 : 728,274,401.70 = 429,396,098.20 : x
  2. Step 2: Convert to fraction form
    485,516,267.80/728,274,401.70 = 429,396,098.20/x
  3. Step 3: Cross multiply
    485,516,267.80x = 728,274,401.70 × 429,396,098.20
  4. Step 4: Simplify right side
    485,516,267.80x = 312,718,186,508,919,488
  5. Step 5: Solve for x
    x = 312,718,186,508,919,488/485,516,267.80
  6. Step 6: Final answer
    x = 644,094,147.30

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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.