Home / 918,943.52-1,268,142.78-511,036.46

Finding the Fourth Proportional to 918,943.52, 1,268,142.78 and 511,036.46

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Solution

The fourth proportional to 918,943.52, 1,268,142.78 and 511,036.46 is: 705,230.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,943.52 : 1,268,142.78 = 511,036.46 : x
  2. Step 2: Convert to fraction form
    918,943.52/1,268,142.78 = 511,036.46/x
  3. Step 3: Cross multiply
    918,943.52x = 1,268,142.78 × 511,036.46
  4. Step 4: Simplify right side
    918,943.52x = 648,067,197,065.76
  5. Step 5: Solve for x
    x = 648,067,197,065.76/918,943.52
  6. Step 6: Final answer
    x = 705,230.72

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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.