Home / 689,768,131.60-951,737,926.03-396,356,012.56

Finding the Fourth Proportional to 689,768,131.60, 951,737,926.03 and 396,356,012.56

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Solution

The fourth proportional to 689,768,131.60, 951,737,926.03 and 396,356,012.56 is: 546,889,646.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,768,131.60 : 951,737,926.03 = 396,356,012.56 : x
  2. Step 2: Convert to fraction form
    689,768,131.60/951,737,926.03 = 396,356,012.56/x
  3. Step 3: Cross multiply
    689,768,131.60x = 951,737,926.03 × 396,356,012.56
  4. Step 4: Simplify right side
    689,768,131.60x = 377,227,049,363,375,040
  5. Step 5: Solve for x
    x = 377,227,049,363,375,040/689,768,131.60
  6. Step 6: Final answer
    x = 546,889,646.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.