Home / 287,654,296.38-431,788,499.10-123,972,830.34

Finding the Fourth Proportional to 287,654,296.38, 431,788,499.10 and 123,972,830.34

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Solution

The fourth proportional to 287,654,296.38, 431,788,499.10 and 123,972,830.34 is: 186,091,579.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,654,296.38 : 431,788,499.10 = 123,972,830.34 : x
  2. Step 2: Convert to fraction form
    287,654,296.38/431,788,499.10 = 123,972,830.34/x
  3. Step 3: Cross multiply
    287,654,296.38x = 431,788,499.10 × 123,972,830.34
  4. Step 4: Simplify right side
    287,654,296.38x = 53,530,042,341,687,544
  5. Step 5: Solve for x
    x = 53,530,042,341,687,544/287,654,296.38
  6. Step 6: Final answer
    x = 186,091,579.42

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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.