Home / 989,491.28-1,365,382.73-553,932.45

Finding the Fourth Proportional to 989,491.28, 1,365,382.73 and 553,932.45

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Solution

The fourth proportional to 989,491.28, 1,365,382.73 and 553,932.45 is: 764,362.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,491.28 : 1,365,382.73 = 553,932.45 : x
  2. Step 2: Convert to fraction form
    989,491.28/1,365,382.73 = 553,932.45/x
  3. Step 3: Cross multiply
    989,491.28x = 1,365,382.73 × 553,932.45
  4. Step 4: Simplify right side
    989,491.28x = 756,329,802,201.42
  5. Step 5: Solve for x
    x = 756,329,802,201.42/989,491.28
  6. Step 6: Final answer
    x = 764,362.28

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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.