Home / 780,143.70-1,171,965.15-543,947.70

Finding the Fourth Proportional to 780,143.70, 1,171,965.15 and 543,947.70

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Solution

The fourth proportional to 780,143.70, 1,171,965.15 and 543,947.70 is: 817,141.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,143.70 : 1,171,965.15 = 543,947.70 : x
  2. Step 2: Convert to fraction form
    780,143.70/1,171,965.15 = 543,947.70/x
  3. Step 3: Cross multiply
    780,143.70x = 1,171,965.15 × 543,947.70
  4. Step 4: Simplify right side
    780,143.70x = 637,487,747,822.66
  5. Step 5: Solve for x
    x = 637,487,747,822.66/780,143.70
  6. Step 6: Final answer
    x = 817,141.44

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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.