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Finding the Fourth Proportional to 625,726.56, 864,215.28 and 424,172.64

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Solution

The fourth proportional to 625,726.56, 864,215.28 and 424,172.64 is: 585,841.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,726.56 : 864,215.28 = 424,172.64 : x
  2. Step 2: Convert to fraction form
    625,726.56/864,215.28 = 424,172.64/x
  3. Step 3: Cross multiply
    625,726.56x = 864,215.28 × 424,172.64
  4. Step 4: Simplify right side
    625,726.56x = 366,576,476,845.94
  5. Step 5: Solve for x
    x = 366,576,476,845.94/625,726.56
  6. Step 6: Final answer
    x = 585,841.32

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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.