Home / 718,995.80-1,078,348.79-263,431.86

Finding the Fourth Proportional to 718,995.80, 1,078,348.79 and 263,431.86

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Solution

The fourth proportional to 718,995.80, 1,078,348.79 and 263,431.86 is: 395,094.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,995.80 : 1,078,348.79 = 263,431.86 : x
  2. Step 2: Convert to fraction form
    718,995.80/1,078,348.79 = 263,431.86/x
  3. Step 3: Cross multiply
    718,995.80x = 1,078,348.79 × 263,431.86
  4. Step 4: Simplify right side
    718,995.80x = 284,071,428,137.03
  5. Step 5: Solve for x
    x = 284,071,428,137.03/718,995.80
  6. Step 6: Final answer
    x = 395,094.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.