Home / 516,917.48-776,261.94-280,721.48

Finding the Fourth Proportional to 516,917.48, 776,261.94 and 280,721.48

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Solution

The fourth proportional to 516,917.48, 776,261.94 and 280,721.48 is: 421,563.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,917.48 : 776,261.94 = 280,721.48 : x
  2. Step 2: Convert to fraction form
    516,917.48/776,261.94 = 280,721.48/x
  3. Step 3: Cross multiply
    516,917.48x = 776,261.94 × 280,721.48
  4. Step 4: Simplify right side
    516,917.48x = 217,913,400,664.47
  5. Step 5: Solve for x
    x = 217,913,400,664.47/516,917.48
  6. Step 6: Final answer
    x = 421,563.23

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1.5x scale

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.