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Finding the Fourth Proportional to 855,101.80, 1,281,850.80 and 322,980.40

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Solution

The fourth proportional to 855,101.80, 1,281,850.80 and 322,980.40 is: 484,167.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,101.80 : 1,281,850.80 = 322,980.40 : x
  2. Step 2: Convert to fraction form
    855,101.80/1,281,850.80 = 322,980.40/x
  3. Step 3: Cross multiply
    855,101.80x = 1,281,850.80 × 322,980.40
  4. Step 4: Simplify right side
    855,101.80x = 414,012,684,124.32
  5. Step 5: Solve for x
    x = 414,012,684,124.32/855,101.80
  6. Step 6: Final answer
    x = 484,167.71

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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.