Home / 898,978.78-1,240,590.66-516,997.36

Finding the Fourth Proportional to 898,978.78, 1,240,590.66 and 516,997.36

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Solution

The fourth proportional to 898,978.78, 1,240,590.66 and 516,997.36 is: 713,456.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,978.78 : 1,240,590.66 = 516,997.36 : x
  2. Step 2: Convert to fraction form
    898,978.78/1,240,590.66 = 516,997.36/x
  3. Step 3: Cross multiply
    898,978.78x = 1,240,590.66 × 516,997.36
  4. Step 4: Simplify right side
    898,978.78x = 641,382,096,060.66
  5. Step 5: Solve for x
    x = 641,382,096,060.66/898,978.78
  6. Step 6: Final answer
    x = 713,456.32

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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.