Home / 487,638.40-672,909.18-272,741.20

Finding the Fourth Proportional to 487,638.40, 672,909.18 and 272,741.20

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Solution

The fourth proportional to 487,638.40, 672,909.18 and 272,741.20 is: 376,365.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,638.40 : 672,909.18 = 272,741.20 : x
  2. Step 2: Convert to fraction form
    487,638.40/672,909.18 = 272,741.20/x
  3. Step 3: Cross multiply
    487,638.40x = 672,909.18 × 272,741.20
  4. Step 4: Simplify right side
    487,638.40x = 183,530,057,244.22
  5. Step 5: Solve for x
    x = 183,530,057,244.22/487,638.40
  6. Step 6: Final answer
    x = 376,365.06

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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.