Home / 1,262,919.72-1,894,405.50-421,478.76

Finding the Fourth Proportional to 1,262,919.72, 1,894,405.50 and 421,478.76

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Solution

The fourth proportional to 1,262,919.72, 1,894,405.50 and 421,478.76 is: 632,226.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262,919.72 : 1,894,405.50 = 421,478.76 : x
  2. Step 2: Convert to fraction form
    1,262,919.72/1,894,405.50 = 421,478.76/x
  3. Step 3: Cross multiply
    1,262,919.72x = 1,894,405.50 × 421,478.76
  4. Step 4: Simplify right side
    1,262,919.72x = 798,451,681,077.18
  5. Step 5: Solve for x
    x = 798,451,681,077.18/1,262,919.72
  6. Step 6: Final answer
    x = 632,226.79

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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.