Home / 859,530.30-1,288,841.85-290,715.90

Finding the Fourth Proportional to 859,530.30, 1,288,841.85 and 290,715.90

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Solution

The fourth proportional to 859,530.30, 1,288,841.85 and 290,715.90 is: 435,920.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,530.30 : 1,288,841.85 = 290,715.90 : x
  2. Step 2: Convert to fraction form
    859,530.30/1,288,841.85 = 290,715.90/x
  3. Step 3: Cross multiply
    859,530.30x = 1,288,841.85 × 290,715.90
  4. Step 4: Simplify right side
    859,530.30x = 374,686,818,380.42
  5. Step 5: Solve for x
    x = 374,686,818,380.42/859,530.30
  6. Step 6: Final answer
    x = 435,920.43

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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.