Home / 448,860.66-618,867.45-287,450.34

Finding the Fourth Proportional to 448,860.66, 618,867.45 and 287,450.34

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Solution

The fourth proportional to 448,860.66, 618,867.45 and 287,450.34 is: 396,322.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,860.66 : 618,867.45 = 287,450.34 : x
  2. Step 2: Convert to fraction form
    448,860.66/618,867.45 = 287,450.34/x
  3. Step 3: Cross multiply
    448,860.66x = 618,867.45 × 287,450.34
  4. Step 4: Simplify right side
    448,860.66x = 177,893,658,917.43
  5. Step 5: Solve for x
    x = 177,893,658,917.43/448,860.66
  6. Step 6: Final answer
    x = 396,322.68

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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.