Home / 487,630.12-672,985.38-272,824.60

Finding the Fourth Proportional to 487,630.12, 672,985.38 and 272,824.60

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Solution

The fourth proportional to 487,630.12, 672,985.38 and 272,824.60 is: 376,529.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,630.12 : 672,985.38 = 272,824.60 : x
  2. Step 2: Convert to fraction form
    487,630.12/672,985.38 = 272,824.60/x
  3. Step 3: Cross multiply
    487,630.12x = 672,985.38 × 272,824.60
  4. Step 4: Simplify right side
    487,630.12x = 183,606,967,104.35
  5. Step 5: Solve for x
    x = 183,606,967,104.35/487,630.12
  6. Step 6: Final answer
    x = 376,529.18

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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.