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Finding the Fourth Proportional to 435,990.48, 653,979.24 and 120,440.40

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Solution

The fourth proportional to 435,990.48, 653,979.24 and 120,440.40 is: 180,658.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,990.48 : 653,979.24 = 120,440.40 : x
  2. Step 2: Convert to fraction form
    435,990.48/653,979.24 = 120,440.40/x
  3. Step 3: Cross multiply
    435,990.48x = 653,979.24 × 120,440.40
  4. Step 4: Simplify right side
    435,990.48x = 78,765,521,257.30
  5. Step 5: Solve for x
    x = 78,765,521,257.30/435,990.48
  6. Step 6: Final answer
    x = 180,658.81

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1.5x scale

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.