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Finding the Fourth Proportional to 628,406.70, 942,610.05 and 488,265.90

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Solution

The fourth proportional to 628,406.70, 942,610.05 and 488,265.90 is: 732,398.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,406.70 : 942,610.05 = 488,265.90 : x
  2. Step 2: Convert to fraction form
    628,406.70/942,610.05 = 488,265.90/x
  3. Step 3: Cross multiply
    628,406.70x = 942,610.05 × 488,265.90
  4. Step 4: Simplify right side
    628,406.70x = 460,244,344,412.30
  5. Step 5: Solve for x
    x = 460,244,344,412.30/628,406.70
  6. Step 6: Final answer
    x = 732,398.85

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.