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Finding the Fourth Proportional to 448,833.56, 619,614.78 and 279,122.36

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Solution

The fourth proportional to 448,833.56, 619,614.78 and 279,122.36 is: 385,328.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,833.56 : 619,614.78 = 279,122.36 : x
  2. Step 2: Convert to fraction form
    448,833.56/619,614.78 = 279,122.36/x
  3. Step 3: Cross multiply
    448,833.56x = 619,614.78 × 279,122.36
  4. Step 4: Simplify right side
    448,833.56x = 172,948,339,684.48
  5. Step 5: Solve for x
    x = 172,948,339,684.48/448,833.56
  6. Step 6: Final answer
    x = 385,328.45

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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.