Home / 782,643.40-1,175,390.70-684,665.80

Finding the Fourth Proportional to 782,643.40, 1,175,390.70 and 684,665.80

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Solution

The fourth proportional to 782,643.40, 1,175,390.70 and 684,665.80 is: 1,028,245.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,643.40 : 1,175,390.70 = 684,665.80 : x
  2. Step 2: Convert to fraction form
    782,643.40/1,175,390.70 = 684,665.80/x
  3. Step 3: Cross multiply
    782,643.40x = 1,175,390.70 × 684,665.80
  4. Step 4: Simplify right side
    782,643.40x = 804,749,813,928.06
  5. Step 5: Solve for x
    x = 804,749,813,928.06/782,643.40
  6. Step 6: Final answer
    x = 1,028,245.83

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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.