Home / 1,378,940.60-1,901,368.86-970,911.92

Finding the Fourth Proportional to 1,378,940.60, 1,901,368.86 and 970,911.92

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Solution

The fourth proportional to 1,378,940.60, 1,901,368.86 and 970,911.92 is: 1,338,753.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,940.60 : 1,901,368.86 = 970,911.92 : x
  2. Step 2: Convert to fraction form
    1,378,940.60/1,901,368.86 = 970,911.92/x
  3. Step 3: Cross multiply
    1,378,940.60x = 1,901,368.86 × 970,911.92
  4. Step 4: Simplify right side
    1,378,940.60x = 1,846,061,690,490.81
  5. Step 5: Solve for x
    x = 1,846,061,690,490.81/1,378,940.60
  6. Step 6: Final answer
    x = 1,338,753.60

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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.