Home / 862,565,897.80-1,292,967,048.30-425,193,891.40

Finding the Fourth Proportional to 862,565,897.80, 1,292,967,048.30 and 425,193,891.40

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Solution

The fourth proportional to 862,565,897.80, 1,292,967,048.30 and 425,193,891.40 is: 637,356,162.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,565,897.80 : 1,292,967,048.30 = 425,193,891.40 : x
  2. Step 2: Convert to fraction form
    862,565,897.80/1,292,967,048.30 = 425,193,891.40/x
  3. Step 3: Cross multiply
    862,565,897.80x = 1,292,967,048.30 × 425,193,891.40
  4. Step 4: Simplify right side
    862,565,897.80x = 549,761,690,718,648,704
  5. Step 5: Solve for x
    x = 549,761,690,718,648,704/862,565,897.80
  6. Step 6: Final answer
    x = 637,356,162.72

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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.