Home / 516,918.48-776,263.44-280,722.48

Finding the Fourth Proportional to 516,918.48, 776,263.44 and 280,722.48

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Solution

The fourth proportional to 516,918.48, 776,263.44 and 280,722.48 is: 421,564.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,918.48 : 776,263.44 = 280,722.48 : x
  2. Step 2: Convert to fraction form
    516,918.48/776,263.44 = 280,722.48/x
  3. Step 3: Cross multiply
    516,918.48x = 776,263.44 × 280,722.48
  4. Step 4: Simplify right side
    516,918.48x = 217,914,598,010.13
  5. Step 5: Solve for x
    x = 217,914,598,010.13/516,918.48
  6. Step 6: Final answer
    x = 421,564.73

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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.