Home / 691,976.70-1,037,770.65-218,807.10

Finding the Fourth Proportional to 691,976.70, 1,037,770.65 and 218,807.10

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Solution

The fourth proportional to 691,976.70, 1,037,770.65 and 218,807.10 is: 328,149.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,976.70 : 1,037,770.65 = 218,807.10 : x
  2. Step 2: Convert to fraction form
    691,976.70/1,037,770.65 = 218,807.10/x
  3. Step 3: Cross multiply
    691,976.70x = 1,037,770.65 × 218,807.10
  4. Step 4: Simplify right side
    691,976.70x = 227,071,586,391.62
  5. Step 5: Solve for x
    x = 227,071,586,391.62/691,976.70
  6. Step 6: Final answer
    x = 328,149.18

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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.