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Finding the Fourth Proportional to 499,397.46, 750,720.12 and 400,638.06

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Solution

The fourth proportional to 499,397.46, 750,720.12 and 400,638.06 is: 602,259.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,397.46 : 750,720.12 = 400,638.06 : x
  2. Step 2: Convert to fraction form
    499,397.46/750,720.12 = 400,638.06/x
  3. Step 3: Cross multiply
    499,397.46x = 750,720.12 × 400,638.06
  4. Step 4: Simplify right side
    499,397.46x = 300,767,052,479.77
  5. Step 5: Solve for x
    x = 300,767,052,479.77/499,397.46
  6. Step 6: Final answer
    x = 602,259.88

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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.