Home / 389,820.60-584,961.30-284,374.20

Finding the Fourth Proportional to 389,820.60, 584,961.30 and 284,374.20

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Solution

The fourth proportional to 389,820.60, 584,961.30 and 284,374.20 is: 426,729.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,820.60 : 584,961.30 = 284,374.20 : x
  2. Step 2: Convert to fraction form
    389,820.60/584,961.30 = 284,374.20/x
  3. Step 3: Cross multiply
    389,820.60x = 584,961.30 × 284,374.20
  4. Step 4: Simplify right side
    389,820.60x = 166,347,901,718.46
  5. Step 5: Solve for x
    x = 166,347,901,718.46/389,820.60
  6. Step 6: Final answer
    x = 426,729.38

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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.