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Finding the Fourth Proportional to 448,624.47, 618,945.43 and 287,568.32

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Solution

The fourth proportional to 448,624.47, 618,945.43 and 287,568.32 is: 396,744.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,624.47 : 618,945.43 = 287,568.32 : x
  2. Step 2: Convert to fraction form
    448,624.47/618,945.43 = 287,568.32/x
  3. Step 3: Cross multiply
    448,624.47x = 618,945.43 × 287,568.32
  4. Step 4: Simplify right side
    448,624.47x = 177,989,097,476.78
  5. Step 5: Solve for x
    x = 177,989,097,476.78/448,624.47
  6. Step 6: Final answer
    x = 396,744.07

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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.