Home / 787,971,511.20-1,181,957,266.80-425,174,455.20

Finding the Fourth Proportional to 787,971,511.20, 1,181,957,266.80 and 425,174,455.20

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Solution

The fourth proportional to 787,971,511.20, 1,181,957,266.80 and 425,174,455.20 is: 637,761,682.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,971,511.20 : 1,181,957,266.80 = 425,174,455.20 : x
  2. Step 2: Convert to fraction form
    787,971,511.20/1,181,957,266.80 = 425,174,455.20/x
  3. Step 3: Cross multiply
    787,971,511.20x = 1,181,957,266.80 × 425,174,455.20
  4. Step 4: Simplify right side
    787,971,511.20x = 502,538,036,981,371,008
  5. Step 5: Solve for x
    x = 502,538,036,981,371,008/787,971,511.20
  6. Step 6: Final answer
    x = 637,761,682.80

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1.5x scale

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.