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Finding the Fourth Proportional to 816,918.80, 1,144,867.30 and 816,918.80

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Solution

The fourth proportional to 816,918.80, 1,144,867.30 and 816,918.80 is: 1,144,867.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,918.80 : 1,144,867.30 = 816,918.80 : x
  2. Step 2: Convert to fraction form
    816,918.80/1,144,867.30 = 816,918.80/x
  3. Step 3: Cross multiply
    816,918.80x = 1,144,867.30 × 816,918.80
  4. Step 4: Simplify right side
    816,918.80x = 935,263,620,875.24
  5. Step 5: Solve for x
    x = 935,263,620,875.24/816,918.80
  6. Step 6: Final answer
    x = 1,144,867.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.