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Finding the Fourth Proportional to 499,411.85, 688,728.74 and 327,267.30

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Solution

The fourth proportional to 499,411.85, 688,728.74 and 327,267.30 is: 451,327.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,411.85 : 688,728.74 = 327,267.30 : x
  2. Step 2: Convert to fraction form
    499,411.85/688,728.74 = 327,267.30/x
  3. Step 3: Cross multiply
    499,411.85x = 688,728.74 × 327,267.30
  4. Step 4: Simplify right side
    499,411.85x = 225,398,395,172.20
  5. Step 5: Solve for x
    x = 225,398,395,172.20/499,411.85
  6. Step 6: Final answer
    x = 451,327.69

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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.