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Finding the Fourth Proportional to 413,099.70, 618,859.80 and 279,323.34

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Solution

The fourth proportional to 413,099.70, 618,859.80 and 279,323.34 is: 418,451.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,099.70 : 618,859.80 = 279,323.34 : x
  2. Step 2: Convert to fraction form
    413,099.70/618,859.80 = 279,323.34/x
  3. Step 3: Cross multiply
    413,099.70x = 618,859.80 × 279,323.34
  4. Step 4: Simplify right side
    413,099.70x = 172,861,986,327.73
  5. Step 5: Solve for x
    x = 172,861,986,327.73/413,099.70
  6. Step 6: Final answer
    x = 418,451.01

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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.