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Finding the Fourth Proportional to 890,681.13, 1,229,217.71 and 488,350.89

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Solution

The fourth proportional to 890,681.13, 1,229,217.71 and 488,350.89 is: 673,966.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,681.13 : 1,229,217.71 = 488,350.89 : x
  2. Step 2: Convert to fraction form
    890,681.13/1,229,217.71 = 488,350.89/x
  3. Step 3: Cross multiply
    890,681.13x = 1,229,217.71 × 488,350.89
  4. Step 4: Simplify right side
    890,681.13x = 600,289,562,682.26
  5. Step 5: Solve for x
    x = 600,289,562,682.26/890,681.13
  6. Step 6: Final answer
    x = 673,966.86

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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.