Home / 627,399.20-865,811.76-340,922.72

Finding the Fourth Proportional to 627,399.20, 865,811.76 and 340,922.72

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Solution

The fourth proportional to 627,399.20, 865,811.76 and 340,922.72 is: 470,473.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,399.20 : 865,811.76 = 340,922.72 : x
  2. Step 2: Convert to fraction form
    627,399.20/865,811.76 = 340,922.72/x
  3. Step 3: Cross multiply
    627,399.20x = 865,811.76 × 340,922.72
  4. Step 4: Simplify right side
    627,399.20x = 295,174,900,227.19
  5. Step 5: Solve for x
    x = 295,174,900,227.19/627,399.20
  6. Step 6: Final answer
    x = 470,473.82

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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.