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Finding the Fourth Proportional to 448,434.88, 618,490.22 and 287,305.02

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Solution

The fourth proportional to 448,434.88, 618,490.22 and 287,305.02 is: 396,256.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,434.88 : 618,490.22 = 287,305.02 : x
  2. Step 2: Convert to fraction form
    448,434.88/618,490.22 = 287,305.02/x
  3. Step 3: Cross multiply
    448,434.88x = 618,490.22 × 287,305.02
  4. Step 4: Simplify right side
    448,434.88x = 177,695,343,590.38
  5. Step 5: Solve for x
    x = 177,695,343,590.38/448,434.88
  6. Step 6: Final answer
    x = 396,256.74

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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.