Home / 1,011,319.48-1,393,816.08-765,715.78

Finding the Fourth Proportional to 1,011,319.48, 1,393,816.08 and 765,715.78

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Solution

The fourth proportional to 1,011,319.48, 1,393,816.08 and 765,715.78 is: 1,055,321.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,011,319.48 : 1,393,816.08 = 765,715.78 : x
  2. Step 2: Convert to fraction form
    1,011,319.48/1,393,816.08 = 765,715.78/x
  3. Step 3: Cross multiply
    1,011,319.48x = 1,393,816.08 × 765,715.78
  4. Step 4: Simplify right side
    1,011,319.48x = 1,067,266,966,873.74
  5. Step 5: Solve for x
    x = 1,067,266,966,873.74/1,011,319.48
  6. Step 6: Final answer
    x = 1,055,321.28

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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.