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Finding the Fourth Proportional to 549,812.32, 757,713.56 and 428,761.88

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Solution

The fourth proportional to 549,812.32, 757,713.56 and 428,761.88 is: 590,890.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,812.32 : 757,713.56 = 428,761.88 : x
  2. Step 2: Convert to fraction form
    549,812.32/757,713.56 = 428,761.88/x
  3. Step 3: Cross multiply
    549,812.32x = 757,713.56 × 428,761.88
  4. Step 4: Simplify right side
    549,812.32x = 324,878,690,487.09
  5. Step 5: Solve for x
    x = 324,878,690,487.09/549,812.32
  6. Step 6: Final answer
    x = 590,890.16

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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.