Home / 1,431,942.60-1,976,042.88-778,548

Finding the Fourth Proportional to 1,431,942.60, 1,976,042.88 and 778,548

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Solution

The fourth proportional to 1,431,942.60, 1,976,042.88 and 778,548 is: 1,074,375.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,942.60 : 1,976,042.88 = 778,548 : x
  2. Step 2: Convert to fraction form
    1,431,942.60/1,976,042.88 = 778,548/x
  3. Step 3: Cross multiply
    1,431,942.60x = 1,976,042.88 × 778,548
  4. Step 4: Simplify right side
    1,431,942.60x = 1,538,444,232,138.24
  5. Step 5: Solve for x
    x = 1,538,444,232,138.24/1,431,942.60
  6. Step 6: Final answer
    x = 1,074,375.63

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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.