Home / 726,706.60-1,087,986.30-643,762.60

Finding the Fourth Proportional to 726,706.60, 1,087,986.30 and 643,762.60

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Solution

The fourth proportional to 726,706.60, 1,087,986.30 and 643,762.60 is: 963,806.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,706.60 : 1,087,986.30 = 643,762.60 : x
  2. Step 2: Convert to fraction form
    726,706.60/1,087,986.30 = 643,762.60/x
  3. Step 3: Cross multiply
    726,706.60x = 1,087,986.30 × 643,762.60
  4. Step 4: Simplify right side
    726,706.60x = 700,404,889,252.38
  5. Step 5: Solve for x
    x = 700,404,889,252.38/726,706.60
  6. Step 6: Final answer
    x = 963,806.97

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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.