Home / 1,378,833.68-1,902,690.60-862,818.32

Finding the Fourth Proportional to 1,378,833.68, 1,902,690.60 and 862,818.32

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Solution

The fourth proportional to 1,378,833.68, 1,902,690.60 and 862,818.32 is: 1,190,626.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,833.68 : 1,902,690.60 = 862,818.32 : x
  2. Step 2: Convert to fraction form
    1,378,833.68/1,902,690.60 = 862,818.32/x
  3. Step 3: Cross multiply
    1,378,833.68x = 1,902,690.60 × 862,818.32
  4. Step 4: Simplify right side
    1,378,833.68x = 1,641,676,306,971.79
  5. Step 5: Solve for x
    x = 1,641,676,306,971.79/1,378,833.68
  6. Step 6: Final answer
    x = 1,190,626.78

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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.