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Finding the Fourth Proportional to 665,527.62, 918,591.39 and 379,216.92

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Solution

The fourth proportional to 665,527.62, 918,591.39 and 379,216.92 is: 523,412.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,527.62 : 918,591.39 = 379,216.92 : x
  2. Step 2: Convert to fraction form
    665,527.62/918,591.39 = 379,216.92/x
  3. Step 3: Cross multiply
    665,527.62x = 918,591.39 × 379,216.92
  4. Step 4: Simplify right side
    665,527.62x = 348,345,397,654.32
  5. Step 5: Solve for x
    x = 348,345,397,654.32/665,527.62
  6. Step 6: Final answer
    x = 523,412.38

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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.