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Finding the Fourth Proportional to 890,169.52, 1,228,428.84 and 482,279.44

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Solution

The fourth proportional to 890,169.52, 1,228,428.84 and 482,279.44 is: 665,542.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,169.52 : 1,228,428.84 = 482,279.44 : x
  2. Step 2: Convert to fraction form
    890,169.52/1,228,428.84 = 482,279.44/x
  3. Step 3: Cross multiply
    890,169.52x = 1,228,428.84 × 482,279.44
  4. Step 4: Simplify right side
    890,169.52x = 592,445,973,035.05
  5. Step 5: Solve for x
    x = 592,445,973,035.05/890,169.52
  6. Step 6: Final answer
    x = 665,542.87

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1.5x scale

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.