Home / 487,276.48-672,456.36-272,425.60

Finding the Fourth Proportional to 487,276.48, 672,456.36 and 272,425.60

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Solution

The fourth proportional to 487,276.48, 672,456.36 and 272,425.60 is: 375,955.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,276.48 : 672,456.36 = 272,425.60 : x
  2. Step 2: Convert to fraction form
    487,276.48/672,456.36 = 272,425.60/x
  3. Step 3: Cross multiply
    487,276.48x = 672,456.36 × 272,425.60
  4. Step 4: Simplify right side
    487,276.48x = 183,194,327,346.82
  5. Step 5: Solve for x
    x = 183,194,327,346.82/487,276.48
  6. Step 6: Final answer
    x = 375,955.61

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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.