Home / 743,114.79-1,025,561.66-420,882.21

Finding the Fourth Proportional to 743,114.79, 1,025,561.66 and 420,882.21

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Solution

The fourth proportional to 743,114.79, 1,025,561.66 and 420,882.21 is: 580,853.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,114.79 : 1,025,561.66 = 420,882.21 : x
  2. Step 2: Convert to fraction form
    743,114.79/1,025,561.66 = 420,882.21/x
  3. Step 3: Cross multiply
    743,114.79x = 1,025,561.66 × 420,882.21
  4. Step 4: Simplify right side
    743,114.79x = 431,640,655,847.66
  5. Step 5: Solve for x
    x = 431,640,655,847.66/743,114.79
  6. Step 6: Final answer
    x = 580,853.27

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.