Home / 989,769.47-1,365,564.42-554,122.80

Finding the Fourth Proportional to 989,769.47, 1,365,564.42 and 554,122.80

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Solution

The fourth proportional to 989,769.47, 1,365,564.42 and 554,122.80 is: 764,511.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,769.47 : 1,365,564.42 = 554,122.80 : x
  2. Step 2: Convert to fraction form
    989,769.47/1,365,564.42 = 554,122.80/x
  3. Step 3: Cross multiply
    989,769.47x = 1,365,564.42 × 554,122.80
  4. Step 4: Simplify right side
    989,769.47x = 756,690,379,990.78
  5. Step 5: Solve for x
    x = 756,690,379,990.78/989,769.47
  6. Step 6: Final answer
    x = 764,511.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.