Home / 487,224.90-672,409.26-280,557.72

Finding the Fourth Proportional to 487,224.90, 672,409.26 and 280,557.72

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Solution

The fourth proportional to 487,224.90, 672,409.26 and 280,557.72 is: 387,192.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,224.90 : 672,409.26 = 280,557.72 : x
  2. Step 2: Convert to fraction form
    487,224.90/672,409.26 = 280,557.72/x
  3. Step 3: Cross multiply
    487,224.90x = 672,409.26 × 280,557.72
  4. Step 4: Simplify right side
    487,224.90x = 188,649,608,892.49
  5. Step 5: Solve for x
    x = 188,649,608,892.49/487,224.90
  6. Step 6: Final answer
    x = 387,192.05

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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.