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Finding the Fourth Proportional to 807,496.40, 1,209,932.40 and 694,647.20

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Solution

The fourth proportional to 807,496.40, 1,209,932.40 and 694,647.20 is: 1,040,841.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,496.40 : 1,209,932.40 = 694,647.20 : x
  2. Step 2: Convert to fraction form
    807,496.40/1,209,932.40 = 694,647.20/x
  3. Step 3: Cross multiply
    807,496.40x = 1,209,932.40 × 694,647.20
  4. Step 4: Simplify right side
    807,496.40x = 840,476,153,849.28
  5. Step 5: Solve for x
    x = 840,476,153,849.28/807,496.40
  6. Step 6: Final answer
    x = 1,040,841.98

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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.