Home / 738,463.62-1,019,081.21-428,426.40

Finding the Fourth Proportional to 738,463.62, 1,019,081.21 and 428,426.40

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Solution

The fourth proportional to 738,463.62, 1,019,081.21 and 428,426.40 is: 591,229.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,463.62 : 1,019,081.21 = 428,426.40 : x
  2. Step 2: Convert to fraction form
    738,463.62/1,019,081.21 = 428,426.40/x
  3. Step 3: Cross multiply
    738,463.62x = 1,019,081.21 × 428,426.40
  4. Step 4: Simplify right side
    738,463.62x = 436,601,294,107.94
  5. Step 5: Solve for x
    x = 436,601,294,107.94/738,463.62
  6. Step 6: Final answer
    x = 591,229.25

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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.