Home / 1,319,589.55-1,979,349.69-421,086.11

Finding the Fourth Proportional to 1,319,589.55, 1,979,349.69 and 421,086.11

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Solution

The fourth proportional to 1,319,589.55, 1,979,349.69 and 421,086.11 is: 631,618.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,589.55 : 1,979,349.69 = 421,086.11 : x
  2. Step 2: Convert to fraction form
    1,319,589.55/1,979,349.69 = 421,086.11/x
  3. Step 3: Cross multiply
    1,319,589.55x = 1,979,349.69 × 421,086.11
  4. Step 4: Simplify right side
    1,319,589.55x = 833,476,667,819.25
  5. Step 5: Solve for x
    x = 833,476,667,819.25/1,319,589.55
  6. Step 6: Final answer
    x = 631,618.12

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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.