Home / 720,420.79-1,080,631.17-271,242.43

Finding the Fourth Proportional to 720,420.79, 1,080,631.17 and 271,242.43

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Solution

The fourth proportional to 720,420.79, 1,080,631.17 and 271,242.43 is: 406,863.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,420.79 : 1,080,631.17 = 271,242.43 : x
  2. Step 2: Convert to fraction form
    720,420.79/1,080,631.17 = 271,242.43/x
  3. Step 3: Cross multiply
    720,420.79x = 1,080,631.17 × 271,242.43
  4. Step 4: Simplify right side
    720,420.79x = 293,113,024,484.54
  5. Step 5: Solve for x
    x = 293,113,024,484.54/720,420.79
  6. Step 6: Final answer
    x = 406,863.64

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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.