Home / 1,210,207.40-1,815,311.10-762,309.80

Finding the Fourth Proportional to 1,210,207.40, 1,815,311.10 and 762,309.80

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Solution

The fourth proportional to 1,210,207.40, 1,815,311.10 and 762,309.80 is: 1,143,464.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,207.40 : 1,815,311.10 = 762,309.80 : x
  2. Step 2: Convert to fraction form
    1,210,207.40/1,815,311.10 = 762,309.80/x
  3. Step 3: Cross multiply
    1,210,207.40x = 1,815,311.10 × 762,309.80
  4. Step 4: Simplify right side
    1,210,207.40x = 1,383,829,441,578.78
  5. Step 5: Solve for x
    x = 1,383,829,441,578.78/1,210,207.40
  6. Step 6: Final answer
    x = 1,143,464.70

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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.