Home / 689,686.20-1,034,678.20-209,951.52

Finding the Fourth Proportional to 689,686.20, 1,034,678.20 and 209,951.52

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Solution

The fourth proportional to 689,686.20, 1,034,678.20 and 209,951.52 is: 314,972.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,686.20 : 1,034,678.20 = 209,951.52 : x
  2. Step 2: Convert to fraction form
    689,686.20/1,034,678.20 = 209,951.52/x
  3. Step 3: Cross multiply
    689,686.20x = 1,034,678.20 × 209,951.52
  4. Step 4: Simplify right side
    689,686.20x = 217,232,260,800.86
  5. Step 5: Solve for x
    x = 217,232,260,800.86/689,686.20
  6. Step 6: Final answer
    x = 314,972.61

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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.