Home / 1,312,290.18-1,799,149.50-1,288,375.20

Finding the Fourth Proportional to 1,312,290.18, 1,799,149.50 and 1,288,375.20

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Solution

The fourth proportional to 1,312,290.18, 1,799,149.50 and 1,288,375.20 is: 1,766,362.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,290.18 : 1,799,149.50 = 1,288,375.20 : x
  2. Step 2: Convert to fraction form
    1,312,290.18/1,799,149.50 = 1,288,375.20/x
  3. Step 3: Cross multiply
    1,312,290.18x = 1,799,149.50 × 1,288,375.20
  4. Step 4: Simplify right side
    1,312,290.18x = 2,317,979,596,892.40
  5. Step 5: Solve for x
    x = 2,317,979,596,892.40/1,312,290.18
  6. Step 6: Final answer
    x = 1,766,362.07

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.