Home / 448,403.36-618,446.52-287,273.28

Finding the Fourth Proportional to 448,403.36, 618,446.52 and 287,273.28

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Solution

The fourth proportional to 448,403.36, 618,446.52 and 287,273.28 is: 396,212.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,403.36 : 618,446.52 = 287,273.28 : x
  2. Step 2: Convert to fraction form
    448,403.36/618,446.52 = 287,273.28/x
  3. Step 3: Cross multiply
    448,403.36x = 618,446.52 × 287,273.28
  4. Step 4: Simplify right side
    448,403.36x = 177,663,160,304.99
  5. Step 5: Solve for x
    x = 177,663,160,304.99/448,403.36
  6. Step 6: Final answer
    x = 396,212.82

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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.