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Finding the Fourth Proportional to 389,798.38, 584,718.36 and 123,579.73

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Solution

The fourth proportional to 389,798.38, 584,718.36 and 123,579.73 is: 185,376.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,798.38 : 584,718.36 = 123,579.73 : x
  2. Step 2: Convert to fraction form
    389,798.38/584,718.36 = 123,579.73/x
  3. Step 3: Cross multiply
    389,798.38x = 584,718.36 × 123,579.73
  4. Step 4: Simplify right side
    389,798.38x = 72,259,337,054.84
  5. Step 5: Solve for x
    x = 72,259,337,054.84/389,798.38
  6. Step 6: Final answer
    x = 185,376.19

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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.