Home / 881,467.20-1,216,645.92-499,721.76

Finding the Fourth Proportional to 881,467.20, 1,216,645.92 and 499,721.76

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Solution

The fourth proportional to 881,467.20, 1,216,645.92 and 499,721.76 is: 689,741.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,467.20 : 1,216,645.92 = 499,721.76 : x
  2. Step 2: Convert to fraction form
    881,467.20/1,216,645.92 = 499,721.76/x
  3. Step 3: Cross multiply
    881,467.20x = 1,216,645.92 × 499,721.76
  4. Step 4: Simplify right side
    881,467.20x = 607,984,440,439.22
  5. Step 5: Solve for x
    x = 607,984,440,439.22/881,467.20
  6. Step 6: Final answer
    x = 689,741.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.