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Finding the Fourth Proportional to 807,638.90, 1,208,833.95 and 807,638.90

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Solution

The fourth proportional to 807,638.90, 1,208,833.95 and 807,638.90 is: 1,208,833.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,638.90 : 1,208,833.95 = 807,638.90 : x
  2. Step 2: Convert to fraction form
    807,638.90/1,208,833.95 = 807,638.90/x
  3. Step 3: Cross multiply
    807,638.90x = 1,208,833.95 × 807,638.90
  4. Step 4: Simplify right side
    807,638.90x = 976,301,321,660.66
  5. Step 5: Solve for x
    x = 976,301,321,660.66/807,638.90
  6. Step 6: Final answer
    x = 1,208,833.95

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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.