Home / 487,449.60-672,698.78-272,589.16

Finding the Fourth Proportional to 487,449.60, 672,698.78 and 272,589.16

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Solution

The fourth proportional to 487,449.60, 672,698.78 and 272,589.16 is: 376,183.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,449.60 : 672,698.78 = 272,589.16 : x
  2. Step 2: Convert to fraction form
    487,449.60/672,698.78 = 272,589.16/x
  3. Step 3: Cross multiply
    487,449.60x = 672,698.78 × 272,589.16
  4. Step 4: Simplify right side
    487,449.60x = 183,370,395,373.23
  5. Step 5: Solve for x
    x = 183,370,395,373.23/487,449.60
  6. Step 6: Final answer
    x = 376,183.29

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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.