Home / 689,768,128.60-951,737,921.82-396,356,009.56

Finding the Fourth Proportional to 689,768,128.60, 951,737,921.82 and 396,356,009.56

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Solution

The fourth proportional to 689,768,128.60, 951,737,921.82 and 396,356,009.56 is: 546,889,641.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,768,128.60 : 951,737,921.82 = 396,356,009.56 : x
  2. Step 2: Convert to fraction form
    689,768,128.60/951,737,921.82 = 396,356,009.56/x
  3. Step 3: Cross multiply
    689,768,128.60x = 951,737,921.82 × 396,356,009.56
  4. Step 4: Simplify right side
    689,768,128.60x = 377,227,044,839,502,464
  5. Step 5: Solve for x
    x = 377,227,044,839,502,464/689,768,128.60
  6. Step 6: Final answer
    x = 546,889,641.89

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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.