Home / 521,368,714.25-782,153,779.22-198,227,461.13

Finding the Fourth Proportional to 521,368,714.25, 782,153,779.22 and 198,227,461.13

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Solution

The fourth proportional to 521,368,714.25, 782,153,779.22 and 198,227,461.13 is: 297,379,481.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,368,714.25 : 782,153,779.22 = 198,227,461.13 : x
  2. Step 2: Convert to fraction form
    521,368,714.25/782,153,779.22 = 198,227,461.13/x
  3. Step 3: Cross multiply
    521,368,714.25x = 782,153,779.22 × 198,227,461.13
  4. Step 4: Simplify right side
    521,368,714.25x = 155,044,357,867,024,032
  5. Step 5: Solve for x
    x = 155,044,357,867,024,032/521,368,714.25
  6. Step 6: Final answer
    x = 297,379,481.41

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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.