Home / 487,443.60-672,667.56-272,581.20

Finding the Fourth Proportional to 487,443.60, 672,667.56 and 272,581.20

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Solution

The fourth proportional to 487,443.60, 672,667.56 and 272,581.20 is: 376,159.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,443.60 : 672,667.56 = 272,581.20 : x
  2. Step 2: Convert to fraction form
    487,443.60/672,667.56 = 272,581.20/x
  3. Step 3: Cross multiply
    487,443.60x = 672,667.56 × 272,581.20
  4. Step 4: Simplify right side
    487,443.60x = 183,356,530,705.87
  5. Step 5: Solve for x
    x = 183,356,530,705.87/487,443.60
  6. Step 6: Final answer
    x = 376,159.48

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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.