Home / 1,005,138.20-1,507,856.66-331,095

Finding the Fourth Proportional to 1,005,138.20, 1,507,856.66 and 331,095

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Solution

The fourth proportional to 1,005,138.20, 1,507,856.66 and 331,095 is: 496,691.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005,138.20 : 1,507,856.66 = 331,095 : x
  2. Step 2: Convert to fraction form
    1,005,138.20/1,507,856.66 = 331,095/x
  3. Step 3: Cross multiply
    1,005,138.20x = 1,507,856.66 × 331,095
  4. Step 4: Simplify right side
    1,005,138.20x = 499,243,800,842.70
  5. Step 5: Solve for x
    x = 499,243,800,842.70/1,005,138.20
  6. Step 6: Final answer
    x = 496,691.70

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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.