Home / 680,739.60-1,021,000.05-207,314.85

Finding the Fourth Proportional to 680,739.60, 1,021,000.05 and 207,314.85

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Solution

The fourth proportional to 680,739.60, 1,021,000.05 and 207,314.85 is: 310,938.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,739.60 : 1,021,000.05 = 207,314.85 : x
  2. Step 2: Convert to fraction form
    680,739.60/1,021,000.05 = 207,314.85/x
  3. Step 3: Cross multiply
    680,739.60x = 1,021,000.05 × 207,314.85
  4. Step 4: Simplify right side
    680,739.60x = 211,668,472,215.74
  5. Step 5: Solve for x
    x = 211,668,472,215.74/680,739.60
  6. Step 6: Final answer
    x = 310,938.97

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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.