Home / 918,612.30-1,377,961.65-287,546.70

Finding the Fourth Proportional to 918,612.30, 1,377,961.65 and 287,546.70

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Solution

The fourth proportional to 918,612.30, 1,377,961.65 and 287,546.70 is: 431,333.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,612.30 : 1,377,961.65 = 287,546.70 : x
  2. Step 2: Convert to fraction form
    918,612.30/1,377,961.65 = 287,546.70/x
  3. Step 3: Cross multiply
    918,612.30x = 1,377,961.65 × 287,546.70
  4. Step 4: Simplify right side
    918,612.30x = 396,228,325,184.06
  5. Step 5: Solve for x
    x = 396,228,325,184.06/918,612.30
  6. Step 6: Final answer
    x = 431,333.57

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1.5x scale

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.