Home / 389,916.23-584,869.69-123,679.05

Finding the Fourth Proportional to 389,916.23, 584,869.69 and 123,679.05

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Solution

The fourth proportional to 389,916.23, 584,869.69 and 123,679.05 is: 185,517.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,916.23 : 584,869.69 = 123,679.05 : x
  2. Step 2: Convert to fraction form
    389,916.23/584,869.69 = 123,679.05/x
  3. Step 3: Cross multiply
    389,916.23x = 584,869.69 × 123,679.05
  4. Step 4: Simplify right side
    389,916.23x = 72,336,125,594.33
  5. Step 5: Solve for x
    x = 72,336,125,594.33/389,916.23
  6. Step 6: Final answer
    x = 185,517.10

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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.