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Finding the Fourth Proportional to 515,937.72, 712,261.26 and 400,959.48

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Solution

The fourth proportional to 515,937.72, 712,261.26 and 400,959.48 is: 553,531.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,937.72 : 712,261.26 = 400,959.48 : x
  2. Step 2: Convert to fraction form
    515,937.72/712,261.26 = 400,959.48/x
  3. Step 3: Cross multiply
    515,937.72x = 712,261.26 × 400,959.48
  4. Step 4: Simplify right side
    515,937.72x = 285,587,904,433.75
  5. Step 5: Solve for x
    x = 285,587,904,433.75/515,937.72
  6. Step 6: Final answer
    x = 553,531.74

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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.