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Finding the Fourth Proportional to 890,380.01, 1,228,728.76 and 482,481.77

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Solution

The fourth proportional to 890,380.01, 1,228,728.76 and 482,481.77 is: 665,827.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,380.01 : 1,228,728.76 = 482,481.77 : x
  2. Step 2: Convert to fraction form
    890,380.01/1,228,728.76 = 482,481.77/x
  3. Step 3: Cross multiply
    890,380.01x = 1,228,728.76 × 482,481.77
  4. Step 4: Simplify right side
    890,380.01x = 592,839,219,624.86
  5. Step 5: Solve for x
    x = 592,839,219,624.86/890,380.01
  6. Step 6: Final answer
    x = 665,827.19

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Half scale
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Double scale
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Similar ratio
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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.