Home / 738,529.28-1,019,169.12-398,996.48

Finding the Fourth Proportional to 738,529.28, 1,019,169.12 and 398,996.48

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Solution

The fourth proportional to 738,529.28, 1,019,169.12 and 398,996.48 is: 550,614.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,529.28 : 1,019,169.12 = 398,996.48 : x
  2. Step 2: Convert to fraction form
    738,529.28/1,019,169.12 = 398,996.48/x
  3. Step 3: Cross multiply
    738,529.28x = 1,019,169.12 × 398,996.48
  4. Step 4: Simplify right side
    738,529.28x = 406,644,891,404.70
  5. Step 5: Solve for x
    x = 406,644,891,404.70/738,529.28
  6. Step 6: Final answer
    x = 550,614.45

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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.