Home / 1,991,317.20-2,985,226.20-1,192,916.40

Finding the Fourth Proportional to 1,991,317.20, 2,985,226.20 and 1,192,916.40

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Solution

The fourth proportional to 1,991,317.20, 2,985,226.20 and 1,192,916.40 is: 1,788,326.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,317.20 : 2,985,226.20 = 1,192,916.40 : x
  2. Step 2: Convert to fraction form
    1,991,317.20/2,985,226.20 = 1,192,916.40/x
  3. Step 3: Cross multiply
    1,991,317.20x = 2,985,226.20 × 1,192,916.40
  4. Step 4: Simplify right side
    1,991,317.20x = 3,561,125,291,689.68
  5. Step 5: Solve for x
    x = 3,561,125,291,689.68/1,991,317.20
  6. Step 6: Final answer
    x = 1,788,326.49

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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.