Home / 389,865.39-584,870.97-123,554.40

Finding the Fourth Proportional to 389,865.39, 584,870.97 and 123,554.40

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Solution

The fourth proportional to 389,865.39, 584,870.97 and 123,554.40 is: 185,354.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,865.39 : 584,870.97 = 123,554.40 : x
  2. Step 2: Convert to fraction form
    389,865.39/584,870.97 = 123,554.40/x
  3. Step 3: Cross multiply
    389,865.39x = 584,870.97 × 123,554.40
  4. Step 4: Simplify right side
    389,865.39x = 72,263,381,775.77
  5. Step 5: Solve for x
    x = 72,263,381,775.77/389,865.39
  6. Step 6: Final answer
    x = 185,354.70

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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.