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Finding the Fourth Proportional to 408,950.70, 613,426.05 and 276,240.30

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Solution

The fourth proportional to 408,950.70, 613,426.05 and 276,240.30 is: 414,360.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,950.70 : 613,426.05 = 276,240.30 : x
  2. Step 2: Convert to fraction form
    408,950.70/613,426.05 = 276,240.30/x
  3. Step 3: Cross multiply
    408,950.70x = 613,426.05 × 276,240.30
  4. Step 4: Simplify right side
    408,950.70x = 169,452,996,079.82
  5. Step 5: Solve for x
    x = 169,452,996,079.82/408,950.70
  6. Step 6: Final answer
    x = 414,360.45

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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.