Home / 421,721.55-632,582.33-280,003.95

Finding the Fourth Proportional to 421,721.55, 632,582.33 and 280,003.95

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Solution

The fourth proportional to 421,721.55, 632,582.33 and 280,003.95 is: 420,005.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,721.55 : 632,582.33 = 280,003.95 : x
  2. Step 2: Convert to fraction form
    421,721.55/632,582.33 = 280,003.95/x
  3. Step 3: Cross multiply
    421,721.55x = 632,582.33 × 280,003.95
  4. Step 4: Simplify right side
    421,721.55x = 177,125,549,700.18
  5. Step 5: Solve for x
    x = 177,125,549,700.18/421,721.55
  6. Step 6: Final answer
    x = 420,005.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.