Home / 820,104.10-1,230,156.15-811,809.70

Finding the Fourth Proportional to 820,104.10, 1,230,156.15 and 811,809.70

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Solution

The fourth proportional to 820,104.10, 1,230,156.15 and 811,809.70 is: 1,217,714.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,104.10 : 1,230,156.15 = 811,809.70 : x
  2. Step 2: Convert to fraction form
    820,104.10/1,230,156.15 = 811,809.70/x
  3. Step 3: Cross multiply
    820,104.10x = 1,230,156.15 × 811,809.70
  4. Step 4: Simplify right side
    820,104.10x = 998,652,695,084.66
  5. Step 5: Solve for x
    x = 998,652,695,084.66/820,104.10
  6. Step 6: Final answer
    x = 1,217,714.55

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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.