Home / 448,402.36-618,445.14-287,272.28

Finding the Fourth Proportional to 448,402.36, 618,445.14 and 287,272.28

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Solution

The fourth proportional to 448,402.36, 618,445.14 and 287,272.28 is: 396,211.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,402.36 : 618,445.14 = 287,272.28 : x
  2. Step 2: Convert to fraction form
    448,402.36/618,445.14 = 287,272.28/x
  3. Step 3: Cross multiply
    448,402.36x = 618,445.14 × 287,272.28
  4. Step 4: Simplify right side
    448,402.36x = 177,662,145,422.72
  5. Step 5: Solve for x
    x = 177,662,145,422.72/448,402.36
  6. Step 6: Final answer
    x = 396,211.44

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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.