Home / 487,653.76-672,988.32-272,781.02

Finding the Fourth Proportional to 487,653.76, 672,988.32 and 272,781.02

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Solution

The fourth proportional to 487,653.76, 672,988.32 and 272,781.02 is: 376,452.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,653.76 : 672,988.32 = 272,781.02 : x
  2. Step 2: Convert to fraction form
    487,653.76/672,988.32 = 272,781.02/x
  3. Step 3: Cross multiply
    487,653.76x = 672,988.32 × 272,781.02
  4. Step 4: Simplify right side
    487,653.76x = 183,578,440,377.69
  5. Step 5: Solve for x
    x = 183,578,440,377.69/487,653.76
  6. Step 6: Final answer
    x = 376,452.42

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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.