Home / 680,817.69-1,021,378.19-207,539.91

Finding the Fourth Proportional to 680,817.69, 1,021,378.19 and 207,539.91

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Solution

The fourth proportional to 680,817.69, 1,021,378.19 and 207,539.91 is: 311,356.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,817.69 : 1,021,378.19 = 207,539.91 : x
  2. Step 2: Convert to fraction form
    680,817.69/1,021,378.19 = 207,539.91/x
  3. Step 3: Cross multiply
    680,817.69x = 1,021,378.19 × 207,539.91
  4. Step 4: Simplify right side
    680,817.69x = 211,976,736,590.86
  5. Step 5: Solve for x
    x = 211,976,736,590.86/680,817.69
  6. Step 6: Final answer
    x = 311,356.09

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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.