Home / 448,860.85-618,867.71-287,450.53

Finding the Fourth Proportional to 448,860.85, 618,867.71 and 287,450.53

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Solution

The fourth proportional to 448,860.85, 618,867.71 and 287,450.53 is: 396,322.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,860.85 : 618,867.71 = 287,450.53 : x
  2. Step 2: Convert to fraction form
    448,860.85/618,867.71 = 287,450.53/x
  3. Step 3: Cross multiply
    448,860.85x = 618,867.71 × 287,450.53
  4. Step 4: Simplify right side
    448,860.85x = 177,893,848,254.96
  5. Step 5: Solve for x
    x = 177,893,848,254.96/448,860.85
  6. Step 6: Final answer
    x = 396,322.93

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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.