Home / 918,630.50-1,377,856.71-278,939.86

Finding the Fourth Proportional to 918,630.50, 1,377,856.71 and 278,939.86

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Solution

The fourth proportional to 918,630.50, 1,377,856.71 and 278,939.86 is: 418,382.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,630.50 : 1,377,856.71 = 278,939.86 : x
  2. Step 2: Convert to fraction form
    918,630.50/1,377,856.71 = 278,939.86/x
  3. Step 3: Cross multiply
    918,630.50x = 1,377,856.71 × 278,939.86
  4. Step 4: Simplify right side
    918,630.50x = 384,339,157,787.46
  5. Step 5: Solve for x
    x = 384,339,157,787.46/918,630.50
  6. Step 6: Final answer
    x = 418,382.75

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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.