Home / 678,024-1,016,642.20-257,070.24

Finding the Fourth Proportional to 678,024, 1,016,642.20 and 257,070.24

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Solution

The fourth proportional to 678,024, 1,016,642.20 and 257,070.24 is: 385,456.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,024 : 1,016,642.20 = 257,070.24 : x
  2. Step 2: Convert to fraction form
    678,024/1,016,642.20 = 257,070.24/x
  3. Step 3: Cross multiply
    678,024x = 1,016,642.20 × 257,070.24
  4. Step 4: Simplify right side
    678,024x = 261,348,454,348.13
  5. Step 5: Solve for x
    x = 261,348,454,348.13/678,024
  6. Step 6: Final answer
    x = 385,456.05

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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.