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Finding the Fourth Proportional to 490,231.80, 735,347.70 and 486,732.60

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Solution

The fourth proportional to 490,231.80, 735,347.70 and 486,732.60 is: 730,098.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,231.80 : 735,347.70 = 486,732.60 : x
  2. Step 2: Convert to fraction form
    490,231.80/735,347.70 = 486,732.60/x
  3. Step 3: Cross multiply
    490,231.80x = 735,347.70 × 486,732.60
  4. Step 4: Simplify right side
    490,231.80x = 357,917,697,925.02
  5. Step 5: Solve for x
    x = 357,917,697,925.02/490,231.80
  6. Step 6: Final answer
    x = 730,098.90

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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.