Home / 487,289.12-672,520.73-272,441.88

Finding the Fourth Proportional to 487,289.12, 672,520.73 and 272,441.88

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Solution

The fourth proportional to 487,289.12, 672,520.73 and 272,441.88 is: 376,004.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,289.12 : 672,520.73 = 272,441.88 : x
  2. Step 2: Convert to fraction form
    487,289.12/672,520.73 = 272,441.88/x
  3. Step 3: Cross multiply
    487,289.12x = 672,520.73 × 272,441.88
  4. Step 4: Simplify right side
    487,289.12x = 183,222,810,657.96
  5. Step 5: Solve for x
    x = 183,222,810,657.96/487,289.12
  6. Step 6: Final answer
    x = 376,004.32

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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.