Home / 782,046.40-1,078,667.49-717,723.39

Finding the Fourth Proportional to 782,046.40, 1,078,667.49 and 717,723.39

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Solution

The fourth proportional to 782,046.40, 1,078,667.49 and 717,723.39 is: 989,947.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,046.40 : 1,078,667.49 = 717,723.39 : x
  2. Step 2: Convert to fraction form
    782,046.40/1,078,667.49 = 717,723.39/x
  3. Step 3: Cross multiply
    782,046.40x = 1,078,667.49 × 717,723.39
  4. Step 4: Simplify right side
    782,046.40x = 774,184,887,605.59
  5. Step 5: Solve for x
    x = 774,184,887,605.59/782,046.40
  6. Step 6: Final answer
    x = 989,947.51

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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.