Home / 1,992,407.68-2,988,601.20-778,107.52

Finding the Fourth Proportional to 1,992,407.68, 2,988,601.20 and 778,107.52

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Solution

The fourth proportional to 1,992,407.68, 2,988,601.20 and 778,107.52 is: 1,167,157.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992,407.68 : 2,988,601.20 = 778,107.52 : x
  2. Step 2: Convert to fraction form
    1,992,407.68/2,988,601.20 = 778,107.52/x
  3. Step 3: Cross multiply
    1,992,407.68x = 2,988,601.20 × 778,107.52
  4. Step 4: Simplify right side
    1,992,407.68x = 2,325,453,068,001.02
  5. Step 5: Solve for x
    x = 2,325,453,068,001.02/1,992,407.68
  6. Step 6: Final answer
    x = 1,167,157.25

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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.