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Finding the Fourth Proportional to 975,809.20, 1,461,640.20 and 809,921.20

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Solution

The fourth proportional to 975,809.20, 1,461,640.20 and 809,921.20 is: 1,213,160.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    975,809.20 : 1,461,640.20 = 809,921.20 : x
  2. Step 2: Convert to fraction form
    975,809.20/1,461,640.20 = 809,921.20/x
  3. Step 3: Cross multiply
    975,809.20x = 1,461,640.20 × 809,921.20
  4. Step 4: Simplify right side
    975,809.20x = 1,183,813,384,752.24
  5. Step 5: Solve for x
    x = 1,183,813,384,752.24/975,809.20
  6. Step 6: Final answer
    x = 1,213,160.71

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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.