Home / 389,725.18-584,604.78-123,505.34

Finding the Fourth Proportional to 389,725.18, 584,604.78 and 123,505.34

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Solution

The fourth proportional to 389,725.18, 584,604.78 and 123,505.34 is: 185,263.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,725.18 : 584,604.78 = 123,505.34 : x
  2. Step 2: Convert to fraction form
    389,725.18/584,604.78 = 123,505.34/x
  3. Step 3: Cross multiply
    389,725.18x = 584,604.78 × 123,505.34
  4. Step 4: Simplify right side
    389,725.18x = 72,201,812,119.53
  5. Step 5: Solve for x
    x = 72,201,812,119.53/389,725.18
  6. Step 6: Final answer
    x = 185,263.40

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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.