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Finding the Fourth Proportional to 806,803.80, 1,210,205.70 and 768,096.60

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Solution

The fourth proportional to 806,803.80, 1,210,205.70 and 768,096.60 is: 1,152,144.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,803.80 : 1,210,205.70 = 768,096.60 : x
  2. Step 2: Convert to fraction form
    806,803.80/1,210,205.70 = 768,096.60/x
  3. Step 3: Cross multiply
    806,803.80x = 1,210,205.70 × 768,096.60
  4. Step 4: Simplify right side
    806,803.80x = 929,554,883,470.62
  5. Step 5: Solve for x
    x = 929,554,883,470.62/806,803.80
  6. Step 6: Final answer
    x = 1,152,144.90

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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.