Home / 287,654,246.88-431,788,424.85-123,972,780.84

Finding the Fourth Proportional to 287,654,246.88, 431,788,424.85 and 123,972,780.84

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Solution

The fourth proportional to 287,654,246.88, 431,788,424.85 and 123,972,780.84 is: 186,091,505.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,654,246.88 : 431,788,424.85 = 123,972,780.84 : x
  2. Step 2: Convert to fraction form
    287,654,246.88/431,788,424.85 = 123,972,780.84/x
  3. Step 3: Cross multiply
    287,654,246.88x = 431,788,424.85 × 123,972,780.84
  4. Step 4: Simplify right side
    287,654,246.88x = 53,530,011,763,177,864
  5. Step 5: Solve for x
    x = 53,530,011,763,177,864/287,654,246.88
  6. Step 6: Final answer
    x = 186,091,505.14

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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.