Home / 818,423.40-1,227,635.10-257,629.80

Finding the Fourth Proportional to 818,423.40, 1,227,635.10 and 257,629.80

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Solution

The fourth proportional to 818,423.40, 1,227,635.10 and 257,629.80 is: 386,444.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,423.40 : 1,227,635.10 = 257,629.80 : x
  2. Step 2: Convert to fraction form
    818,423.40/1,227,635.10 = 257,629.80/x
  3. Step 3: Cross multiply
    818,423.40x = 1,227,635.10 × 257,629.80
  4. Step 4: Simplify right side
    818,423.40x = 316,275,385,285.98
  5. Step 5: Solve for x
    x = 316,275,385,285.98/818,423.40
  6. Step 6: Final answer
    x = 386,444.70

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Similar ratio
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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.