Home / 1,378,829.12-1,902,007.08-827,402.18

Finding the Fourth Proportional to 1,378,829.12, 1,902,007.08 and 827,402.18

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Solution

The fourth proportional to 1,378,829.12, 1,902,007.08 and 827,402.18 is: 1,141,348.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,829.12 : 1,902,007.08 = 827,402.18 : x
  2. Step 2: Convert to fraction form
    1,378,829.12/1,902,007.08 = 827,402.18/x
  3. Step 3: Cross multiply
    1,378,829.12x = 1,902,007.08 × 827,402.18
  4. Step 4: Simplify right side
    1,378,829.12x = 1,573,724,794,857.40
  5. Step 5: Solve for x
    x = 1,573,724,794,857.40/1,378,829.12
  6. Step 6: Final answer
    x = 1,141,348.68

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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.