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Finding the Fourth Proportional to 609,793.38, 841,807.38 and 428,660.58

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Solution

The fourth proportional to 609,793.38, 841,807.38 and 428,660.58 is: 591,757.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,793.38 : 841,807.38 = 428,660.58 : x
  2. Step 2: Convert to fraction form
    609,793.38/841,807.38 = 428,660.58/x
  3. Step 3: Cross multiply
    609,793.38x = 841,807.38 × 428,660.58
  4. Step 4: Simplify right side
    609,793.38x = 360,849,639,759.08
  5. Step 5: Solve for x
    x = 360,849,639,759.08/609,793.38
  6. Step 6: Final answer
    x = 591,757.23

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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.