Home / 821,663.40-1,232,495.10-809,853.60

Finding the Fourth Proportional to 821,663.40, 1,232,495.10 and 809,853.60

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Solution

The fourth proportional to 821,663.40, 1,232,495.10 and 809,853.60 is: 1,214,780.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,663.40 : 1,232,495.10 = 809,853.60 : x
  2. Step 2: Convert to fraction form
    821,663.40/1,232,495.10 = 809,853.60/x
  3. Step 3: Cross multiply
    821,663.40x = 1,232,495.10 × 809,853.60
  4. Step 4: Simplify right side
    821,663.40x = 998,140,593,717.36
  5. Step 5: Solve for x
    x = 998,140,593,717.36/821,663.40
  6. Step 6: Final answer
    x = 1,214,780.40

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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.