Home / 487,687.48-672,981.60-272,786.08

Finding the Fourth Proportional to 487,687.48, 672,981.60 and 272,786.08

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Solution

The fourth proportional to 487,687.48, 672,981.60 and 272,786.08 is: 376,429.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,687.48 : 672,981.60 = 272,786.08 : x
  2. Step 2: Convert to fraction form
    487,687.48/672,981.60 = 272,786.08/x
  3. Step 3: Cross multiply
    487,687.48x = 672,981.60 × 272,786.08
  4. Step 4: Simplify right side
    487,687.48x = 183,580,012,576.13
  5. Step 5: Solve for x
    x = 183,580,012,576.13/487,687.48
  6. Step 6: Final answer
    x = 376,429.62

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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.