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Finding the Fourth Proportional to 480,997.40, 720,057.69 and 290,882.40

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Solution

The fourth proportional to 480,997.40, 720,057.69 and 290,882.40 is: 435,453.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,997.40 : 720,057.69 = 290,882.40 : x
  2. Step 2: Convert to fraction form
    480,997.40/720,057.69 = 290,882.40/x
  3. Step 3: Cross multiply
    480,997.40x = 720,057.69 × 290,882.40
  4. Step 4: Simplify right side
    480,997.40x = 209,452,110,355.76
  5. Step 5: Solve for x
    x = 209,452,110,355.76/480,997.40
  6. Step 6: Final answer
    x = 435,453.73

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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.