Home / 890,660.13-1,229,188.73-488,329.89

Finding the Fourth Proportional to 890,660.13, 1,229,188.73 and 488,329.89

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Solution

The fourth proportional to 890,660.13, 1,229,188.73 and 488,329.89 is: 673,937.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,660.13 : 1,229,188.73 = 488,329.89 : x
  2. Step 2: Convert to fraction form
    890,660.13/1,229,188.73 = 488,329.89/x
  3. Step 3: Cross multiply
    890,660.13x = 1,229,188.73 × 488,329.89
  4. Step 4: Simplify right side
    890,660.13x = 600,249,597,310.14
  5. Step 5: Solve for x
    x = 600,249,597,310.14/890,660.13
  6. Step 6: Final answer
    x = 673,937.88

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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.