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Finding the Fourth Proportional to 807,797.40, 1,211,696.10 and 729,065.40

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Solution

The fourth proportional to 807,797.40, 1,211,696.10 and 729,065.40 is: 1,093,598.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,797.40 : 1,211,696.10 = 729,065.40 : x
  2. Step 2: Convert to fraction form
    807,797.40/1,211,696.10 = 729,065.40/x
  3. Step 3: Cross multiply
    807,797.40x = 1,211,696.10 × 729,065.40
  4. Step 4: Simplify right side
    807,797.40x = 883,405,701,824.94
  5. Step 5: Solve for x
    x = 883,405,701,824.94/807,797.40
  6. Step 6: Final answer
    x = 1,093,598.10

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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.