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Finding the Fourth Proportional to 487,406.32, 672,616.92 and 272,546.80

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Solution

The fourth proportional to 487,406.32, 672,616.92 and 272,546.80 is: 376,112.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,406.32 : 672,616.92 = 272,546.80 : x
  2. Step 2: Convert to fraction form
    487,406.32/672,616.92 = 272,546.80/x
  3. Step 3: Cross multiply
    487,406.32x = 672,616.92 × 272,546.80
  4. Step 4: Simplify right side
    487,406.32x = 183,319,589,171.86
  5. Step 5: Solve for x
    x = 183,319,589,171.86/487,406.32
  6. Step 6: Final answer
    x = 376,112.46

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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.