Home / 818,710.20-1,228,065.30-257,744.70

Finding the Fourth Proportional to 818,710.20, 1,228,065.30 and 257,744.70

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Solution

The fourth proportional to 818,710.20, 1,228,065.30 and 257,744.70 is: 386,617.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,710.20 : 1,228,065.30 = 257,744.70 : x
  2. Step 2: Convert to fraction form
    818,710.20/1,228,065.30 = 257,744.70/x
  3. Step 3: Cross multiply
    818,710.20x = 1,228,065.30 × 257,744.70
  4. Step 4: Simplify right side
    818,710.20x = 316,527,322,328.91
  5. Step 5: Solve for x
    x = 316,527,322,328.91/818,710.20
  6. Step 6: Final answer
    x = 386,617.05

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Similar ratio
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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.