Home / 819,110.90-1,228,666.35-808,613.30

Finding the Fourth Proportional to 819,110.90, 1,228,666.35 and 808,613.30

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Solution

The fourth proportional to 819,110.90, 1,228,666.35 and 808,613.30 is: 1,212,919.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,110.90 : 1,228,666.35 = 808,613.30 : x
  2. Step 2: Convert to fraction form
    819,110.90/1,228,666.35 = 808,613.30/x
  3. Step 3: Cross multiply
    819,110.90x = 1,228,666.35 × 808,613.30
  4. Step 4: Simplify right side
    819,110.90x = 993,515,951,872.46
  5. Step 5: Solve for x
    x = 993,515,951,872.46/819,110.90
  6. Step 6: Final answer
    x = 1,212,919.95

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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.