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Finding the Fourth Proportional to 656,062.20, 984,482.10 and 432,064.80

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Solution

The fourth proportional to 656,062.20, 984,482.10 and 432,064.80 is: 648,353.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,062.20 : 984,482.10 = 432,064.80 : x
  2. Step 2: Convert to fraction form
    656,062.20/984,482.10 = 432,064.80/x
  3. Step 3: Cross multiply
    656,062.20x = 984,482.10 × 432,064.80
  4. Step 4: Simplify right side
    656,062.20x = 425,360,061,640.08
  5. Step 5: Solve for x
    x = 425,360,061,640.08/656,062.20
  6. Step 6: Final answer
    x = 648,353.25

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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.