Home / 825,479.10-1,238,411.70-256,832.10

Finding the Fourth Proportional to 825,479.10, 1,238,411.70 and 256,832.10

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Solution

The fourth proportional to 825,479.10, 1,238,411.70 and 256,832.10 is: 385,308.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,479.10 : 1,238,411.70 = 256,832.10 : x
  2. Step 2: Convert to fraction form
    825,479.10/1,238,411.70 = 256,832.10/x
  3. Step 3: Cross multiply
    825,479.10x = 1,238,411.70 × 256,832.10
  4. Step 4: Simplify right side
    825,479.10x = 318,063,877,575.57
  5. Step 5: Solve for x
    x = 318,063,877,575.57/825,479.10
  6. Step 6: Final answer
    x = 385,308.21

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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.