Home / 664,123.93-916,463.85-392,279.83

Finding the Fourth Proportional to 664,123.93, 916,463.85 and 392,279.83

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Solution

The fourth proportional to 664,123.93, 916,463.85 and 392,279.83 is: 541,330.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,123.93 : 916,463.85 = 392,279.83 : x
  2. Step 2: Convert to fraction form
    664,123.93/916,463.85 = 392,279.83/x
  3. Step 3: Cross multiply
    664,123.93x = 916,463.85 × 392,279.83
  4. Step 4: Simplify right side
    664,123.93x = 359,510,283,279.15
  5. Step 5: Solve for x
    x = 359,510,283,279.15/664,123.93
  6. Step 6: Final answer
    x = 541,330.11

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1.5x scale

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.