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Finding the Fourth Proportional to 448,859.56, 619,650.66 and 279,148.36

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Solution

The fourth proportional to 448,859.56, 619,650.66 and 279,148.36 is: 385,364.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,859.56 : 619,650.66 = 279,148.36 : x
  2. Step 2: Convert to fraction form
    448,859.56/619,650.66 = 279,148.36/x
  3. Step 3: Cross multiply
    448,859.56x = 619,650.66 × 279,148.36
  4. Step 4: Simplify right side
    448,859.56x = 172,974,465,511.92
  5. Step 5: Solve for x
    x = 172,974,465,511.92/448,859.56
  6. Step 6: Final answer
    x = 385,364.33

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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.