Home / 739,489.20-1,109,230.20-289,892.40

Finding the Fourth Proportional to 739,489.20, 1,109,230.20 and 289,892.40

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Solution

The fourth proportional to 739,489.20, 1,109,230.20 and 289,892.40 is: 434,837.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,489.20 : 1,109,230.20 = 289,892.40 : x
  2. Step 2: Convert to fraction form
    739,489.20/1,109,230.20 = 289,892.40/x
  3. Step 3: Cross multiply
    739,489.20x = 1,109,230.20 × 289,892.40
  4. Step 4: Simplify right side
    739,489.20x = 321,557,404,830.48
  5. Step 5: Solve for x
    x = 321,557,404,830.48/739,489.20
  6. Step 6: Final answer
    x = 434,837.19

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1.5x scale

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.