Home / 656,822.10-985,233.15-432,435.90

Finding the Fourth Proportional to 656,822.10, 985,233.15 and 432,435.90

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Solution

The fourth proportional to 656,822.10, 985,233.15 and 432,435.90 is: 648,653.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,822.10 : 985,233.15 = 432,435.90 : x
  2. Step 2: Convert to fraction form
    656,822.10/985,233.15 = 432,435.90/x
  3. Step 3: Cross multiply
    656,822.10x = 985,233.15 × 432,435.90
  4. Step 4: Simplify right side
    656,822.10x = 426,050,183,930.09
  5. Step 5: Solve for x
    x = 426,050,183,930.09/656,822.10
  6. Step 6: Final answer
    x = 648,653.85

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Double scale
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Similar ratio
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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.