Home / 680,689.86-1,019,112.93-360,115.62

Finding the Fourth Proportional to 680,689.86, 1,019,112.93 and 360,115.62

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Solution

The fourth proportional to 680,689.86, 1,019,112.93 and 360,115.62 is: 539,156.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,689.86 : 1,019,112.93 = 360,115.62 : x
  2. Step 2: Convert to fraction form
    680,689.86/1,019,112.93 = 360,115.62/x
  3. Step 3: Cross multiply
    680,689.86x = 1,019,112.93 × 360,115.62
  4. Step 4: Simplify right side
    680,689.86x = 366,998,484,636.97
  5. Step 5: Solve for x
    x = 366,998,484,636.97/680,689.86
  6. Step 6: Final answer
    x = 539,156.68

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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.