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Finding the Fourth Proportional to 816,900.80, 1,144,842.10 and 816,900.80

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Solution

The fourth proportional to 816,900.80, 1,144,842.10 and 816,900.80 is: 1,144,842.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,900.80 : 1,144,842.10 = 816,900.80 : x
  2. Step 2: Convert to fraction form
    816,900.80/1,144,842.10 = 816,900.80/x
  3. Step 3: Cross multiply
    816,900.80x = 1,144,842.10 × 816,900.80
  4. Step 4: Simplify right side
    816,900.80x = 935,222,427,363.68
  5. Step 5: Solve for x
    x = 935,222,427,363.68/816,900.80
  6. Step 6: Final answer
    x = 1,144,842.10

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Double scale
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1.5x scale

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.