Home / 857,447.16-1,286,221.23-288,780.72

Finding the Fourth Proportional to 857,447.16, 1,286,221.23 and 288,780.72

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Solution

The fourth proportional to 857,447.16, 1,286,221.23 and 288,780.72 is: 433,188.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,447.16 : 1,286,221.23 = 288,780.72 : x
  2. Step 2: Convert to fraction form
    857,447.16/1,286,221.23 = 288,780.72/x
  3. Step 3: Cross multiply
    857,447.16x = 1,286,221.23 × 288,780.72
  4. Step 4: Simplify right side
    857,447.16x = 371,435,892,878.69
  5. Step 5: Solve for x
    x = 371,435,892,878.69/857,447.16
  6. Step 6: Final answer
    x = 433,188.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.