Home / 448,435.32-618,490.81-287,305.46

Finding the Fourth Proportional to 448,435.32, 618,490.81 and 287,305.46

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Solution

The fourth proportional to 448,435.32, 618,490.81 and 287,305.46 is: 396,257.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,435.32 : 618,490.81 = 287,305.46 : x
  2. Step 2: Convert to fraction form
    448,435.32/618,490.81 = 287,305.46/x
  3. Step 3: Cross multiply
    448,435.32x = 618,490.81 × 287,305.46
  4. Step 4: Simplify right side
    448,435.32x = 177,695,786,672.82
  5. Step 5: Solve for x
    x = 177,695,786,672.82/448,435.32
  6. Step 6: Final answer
    x = 396,257.34

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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.