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Finding the Fourth Proportional to 448,632.85, 618,763.24 and 287,502.88

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Solution

The fourth proportional to 448,632.85, 618,763.24 and 287,502.88 is: 396,529.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,632.85 : 618,763.24 = 287,502.88 : x
  2. Step 2: Convert to fraction form
    448,632.85/618,763.24 = 287,502.88/x
  3. Step 3: Cross multiply
    448,632.85x = 618,763.24 × 287,502.88
  4. Step 4: Simplify right side
    448,632.85x = 177,896,213,538.13
  5. Step 5: Solve for x
    x = 177,896,213,538.13/448,632.85
  6. Step 6: Final answer
    x = 396,529.62

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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.