Home / 890,178.88-1,228,445.20-482,290.86

Finding the Fourth Proportional to 890,178.88, 1,228,445.20 and 482,290.86

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Solution

The fourth proportional to 890,178.88, 1,228,445.20 and 482,290.86 is: 665,560.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,178.88 : 1,228,445.20 = 482,290.86 : x
  2. Step 2: Convert to fraction form
    890,178.88/1,228,445.20 = 482,290.86/x
  3. Step 3: Cross multiply
    890,178.88x = 1,228,445.20 × 482,290.86
  4. Step 4: Simplify right side
    890,178.88x = 592,467,891,970.87
  5. Step 5: Solve for x
    x = 592,467,891,970.87/890,178.88
  6. Step 6: Final answer
    x = 665,560.49

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Double scale
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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.