Home / 1,011,320.48-1,393,817.46-765,716.78

Finding the Fourth Proportional to 1,011,320.48, 1,393,817.46 and 765,716.78

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Solution

The fourth proportional to 1,011,320.48, 1,393,817.46 and 765,716.78 is: 1,055,322.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,011,320.48 : 1,393,817.46 = 765,716.78 : x
  2. Step 2: Convert to fraction form
    1,011,320.48/1,393,817.46 = 765,716.78/x
  3. Step 3: Cross multiply
    1,011,320.48x = 1,393,817.46 × 765,716.78
  4. Step 4: Simplify right side
    1,011,320.48x = 1,067,269,417,378.98
  5. Step 5: Solve for x
    x = 1,067,269,417,378.98/1,011,320.48
  6. Step 6: Final answer
    x = 1,055,322.66

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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.