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Finding the Fourth Proportional to 519,695.13, 774,738.80 and 511,505.52

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Solution

The fourth proportional to 519,695.13, 774,738.80 and 511,505.52 is: 762,530.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,695.13 : 774,738.80 = 511,505.52 : x
  2. Step 2: Convert to fraction form
    519,695.13/774,738.80 = 511,505.52/x
  3. Step 3: Cross multiply
    519,695.13x = 774,738.80 × 511,505.52
  4. Step 4: Simplify right side
    519,695.13x = 396,283,176,448.65
  5. Step 5: Solve for x
    x = 396,283,176,448.65/519,695.13
  6. Step 6: Final answer
    x = 762,530.10

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.