Home / 1,143,947.09-1,578,787.07-660,511.20

Finding the Fourth Proportional to 1,143,947.09, 1,578,787.07 and 660,511.20

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Solution

The fourth proportional to 1,143,947.09, 1,578,787.07 and 660,511.20 is: 911,586.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,143,947.09 : 1,578,787.07 = 660,511.20 : x
  2. Step 2: Convert to fraction form
    1,143,947.09/1,578,787.07 = 660,511.20/x
  3. Step 3: Cross multiply
    1,143,947.09x = 1,578,787.07 × 660,511.20
  4. Step 4: Simplify right side
    1,143,947.09x = 1,042,806,543,801.46
  5. Step 5: Solve for x
    x = 1,042,806,543,801.46/1,143,947.09
  6. Step 6: Final answer
    x = 911,586.34

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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.