Home / 1,319,719.92-1,979,614.25-421,160.46

Finding the Fourth Proportional to 1,319,719.92, 1,979,614.25 and 421,160.46

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Solution

The fourth proportional to 1,319,719.92, 1,979,614.25 and 421,160.46 is: 631,751.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,719.92 : 1,979,614.25 = 421,160.46 : x
  2. Step 2: Convert to fraction form
    1,319,719.92/1,979,614.25 = 421,160.46/x
  3. Step 3: Cross multiply
    1,319,719.92x = 1,979,614.25 × 421,160.46
  4. Step 4: Simplify right side
    1,319,719.92x = 833,735,246,046.75
  5. Step 5: Solve for x
    x = 833,735,246,046.75/1,319,719.92
  6. Step 6: Final answer
    x = 631,751.66

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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.