Home / 448,564.89-618,864.30-287,508.75

Finding the Fourth Proportional to 448,564.89, 618,864.30 and 287,508.75

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Solution

The fourth proportional to 448,564.89, 618,864.30 and 287,508.75 is: 396,662.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,564.89 : 618,864.30 = 287,508.75 : x
  2. Step 2: Convert to fraction form
    448,564.89/618,864.30 = 287,508.75/x
  3. Step 3: Cross multiply
    448,564.89x = 618,864.30 × 287,508.75
  4. Step 4: Simplify right side
    448,564.89x = 177,928,901,312.63
  5. Step 5: Solve for x
    x = 177,928,901,312.63/448,564.89
  6. Step 6: Final answer
    x = 396,662.57

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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.