Home / 521,626,218.60-782,439,327.90-279,761,514.60

Finding the Fourth Proportional to 521,626,218.60, 782,439,327.90 and 279,761,514.60

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Solution

The fourth proportional to 521,626,218.60, 782,439,327.90 and 279,761,514.60 is: 419,642,271.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,626,218.60 : 782,439,327.90 = 279,761,514.60 : x
  2. Step 2: Convert to fraction form
    521,626,218.60/782,439,327.90 = 279,761,514.60/x
  3. Step 3: Cross multiply
    521,626,218.60x = 782,439,327.90 × 279,761,514.60
  4. Step 4: Simplify right side
    521,626,218.60x = 218,896,411,455,910,048
  5. Step 5: Solve for x
    x = 218,896,411,455,910,048/521,626,218.60
  6. Step 6: Final answer
    x = 419,642,271.90

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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.