Home / 1,312,446.20-1,811,175.78-708,834.20

Finding the Fourth Proportional to 1,312,446.20, 1,811,175.78 and 708,834.20

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Solution

The fourth proportional to 1,312,446.20, 1,811,175.78 and 708,834.20 is: 978,191.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,446.20 : 1,811,175.78 = 708,834.20 : x
  2. Step 2: Convert to fraction form
    1,312,446.20/1,811,175.78 = 708,834.20/x
  3. Step 3: Cross multiply
    1,312,446.20x = 1,811,175.78 × 708,834.20
  4. Step 4: Simplify right side
    1,312,446.20x = 1,283,823,326,019.80
  5. Step 5: Solve for x
    x = 1,283,823,326,019.80/1,312,446.20
  6. Step 6: Final answer
    x = 978,191.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.