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Finding the Fourth Proportional to 656,074.20, 984,500.10 and 432,076.80

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Solution

The fourth proportional to 656,074.20, 984,500.10 and 432,076.80 is: 648,371.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,074.20 : 984,500.10 = 432,076.80 : x
  2. Step 2: Convert to fraction form
    656,074.20/984,500.10 = 432,076.80/x
  3. Step 3: Cross multiply
    656,074.20x = 984,500.10 × 432,076.80
  4. Step 4: Simplify right side
    656,074.20x = 425,379,652,807.68
  5. Step 5: Solve for x
    x = 425,379,652,807.68/656,074.20
  6. Step 6: Final answer
    x = 648,371.26

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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.