Home / 861,053,586.12-1,291,785,656.22-278,788,006.98

Finding the Fourth Proportional to 861,053,586.12, 1,291,785,656.22 and 278,788,006.98

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Solution

The fourth proportional to 861,053,586.12, 1,291,785,656.22 and 278,788,006.98 is: 418,248,474.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,053,586.12 : 1,291,785,656.22 = 278,788,006.98 : x
  2. Step 2: Convert to fraction form
    861,053,586.12/1,291,785,656.22 = 278,788,006.98/x
  3. Step 3: Cross multiply
    861,053,586.12x = 1,291,785,656.22 × 278,788,006.98
  4. Step 4: Simplify right side
    861,053,586.12x = 360,134,348,542,925,248
  5. Step 5: Solve for x
    x = 360,134,348,542,925,248/861,053,586.12
  6. Step 6: Final answer
    x = 418,248,474.13

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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.