Home / 1,189,143.27-1,783,987.38-515,337.69

Finding the Fourth Proportional to 1,189,143.27, 1,783,987.38 and 515,337.69

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Solution

The fourth proportional to 1,189,143.27, 1,783,987.38 and 515,337.69 is: 773,124.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,143.27 : 1,783,987.38 = 515,337.69 : x
  2. Step 2: Convert to fraction form
    1,189,143.27/1,783,987.38 = 515,337.69/x
  3. Step 3: Cross multiply
    1,189,143.27x = 1,783,987.38 × 515,337.69
  4. Step 4: Simplify right side
    1,189,143.27x = 919,355,935,398.35
  5. Step 5: Solve for x
    x = 919,355,935,398.35/1,189,143.27
  6. Step 6: Final answer
    x = 773,124.62

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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.