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Finding the Fourth Proportional to 807,569.46, 1,209,932.46 and 719,605.80

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Solution

The fourth proportional to 807,569.46, 1,209,932.46 and 719,605.80 is: 1,078,141.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,569.46 : 1,209,932.46 = 719,605.80 : x
  2. Step 2: Convert to fraction form
    807,569.46/1,209,932.46 = 719,605.80/x
  3. Step 3: Cross multiply
    807,569.46x = 1,209,932.46 × 719,605.80
  4. Step 4: Simplify right side
    807,569.46x = 870,674,415,824.27
  5. Step 5: Solve for x
    x = 870,674,415,824.27/807,569.46
  6. Step 6: Final answer
    x = 1,078,141.83

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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.