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Finding the Fourth Proportional to 808,673.80, 1,213,010.70 and 792,927.40

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Solution

The fourth proportional to 808,673.80, 1,213,010.70 and 792,927.40 is: 1,189,391.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,673.80 : 1,213,010.70 = 792,927.40 : x
  2. Step 2: Convert to fraction form
    808,673.80/1,213,010.70 = 792,927.40/x
  3. Step 3: Cross multiply
    808,673.80x = 1,213,010.70 × 792,927.40
  4. Step 4: Simplify right side
    808,673.80x = 961,829,420,523.18
  5. Step 5: Solve for x
    x = 961,829,420,523.18/808,673.80
  6. Step 6: Final answer
    x = 1,189,391.10

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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.