Home / 420,551.88-579,670.20-298,085.28

Finding the Fourth Proportional to 420,551.88, 579,670.20 and 298,085.28

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Solution

The fourth proportional to 420,551.88, 579,670.20 and 298,085.28 is: 410,867.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,551.88 : 579,670.20 = 298,085.28 : x
  2. Step 2: Convert to fraction form
    420,551.88/579,670.20 = 298,085.28/x
  3. Step 3: Cross multiply
    420,551.88x = 579,670.20 × 298,085.28
  4. Step 4: Simplify right side
    420,551.88x = 172,791,153,874.66
  5. Step 5: Solve for x
    x = 172,791,153,874.66/420,551.88
  6. Step 6: Final answer
    x = 410,867.63

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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.