Home / 421,587.09-582,030.90-278,761.41

Finding the Fourth Proportional to 421,587.09, 582,030.90 and 278,761.41

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Solution

The fourth proportional to 421,587.09, 582,030.90 and 278,761.41 is: 384,849.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,587.09 : 582,030.90 = 278,761.41 : x
  2. Step 2: Convert to fraction form
    421,587.09/582,030.90 = 278,761.41/x
  3. Step 3: Cross multiply
    421,587.09x = 582,030.90 × 278,761.41
  4. Step 4: Simplify right side
    421,587.09x = 162,247,754,347.57
  5. Step 5: Solve for x
    x = 162,247,754,347.57/421,587.09
  6. Step 6: Final answer
    x = 384,849.91

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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.