Home / 1,239,138.61-1,858,350.60-340,609.66

Finding the Fourth Proportional to 1,239,138.61, 1,858,350.60 and 340,609.66

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Solution

The fourth proportional to 1,239,138.61, 1,858,350.60 and 340,609.66 is: 510,816.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,138.61 : 1,858,350.60 = 340,609.66 : x
  2. Step 2: Convert to fraction form
    1,239,138.61/1,858,350.60 = 340,609.66/x
  3. Step 3: Cross multiply
    1,239,138.61x = 1,858,350.60 × 340,609.66
  4. Step 4: Simplify right side
    1,239,138.61x = 632,972,161,380.92
  5. Step 5: Solve for x
    x = 632,972,161,380.92/1,239,138.61
  6. Step 6: Final answer
    x = 510,816.27

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Double scale
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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.