Home / 1,319,351.60-1,979,027.40-420,859.10

Finding the Fourth Proportional to 1,319,351.60, 1,979,027.40 and 420,859.10

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Solution

The fourth proportional to 1,319,351.60, 1,979,027.40 and 420,859.10 is: 631,288.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,351.60 : 1,979,027.40 = 420,859.10 : x
  2. Step 2: Convert to fraction form
    1,319,351.60/1,979,027.40 = 420,859.10/x
  3. Step 3: Cross multiply
    1,319,351.60x = 1,979,027.40 × 420,859.10
  4. Step 4: Simplify right side
    1,319,351.60x = 832,891,690,439.34
  5. Step 5: Solve for x
    x = 832,891,690,439.34/1,319,351.60
  6. Step 6: Final answer
    x = 631,288.65

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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.