Home / 508,840.16-766,917.71-438,610.43

Finding the Fourth Proportional to 508,840.16, 766,917.71 and 438,610.43

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Solution

The fourth proportional to 508,840.16, 766,917.71 and 438,610.43 is: 661,068.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,840.16 : 766,917.71 = 438,610.43 : x
  2. Step 2: Convert to fraction form
    508,840.16/766,917.71 = 438,610.43/x
  3. Step 3: Cross multiply
    508,840.16x = 766,917.71 × 438,610.43
  4. Step 4: Simplify right side
    508,840.16x = 336,378,109,571.54
  5. Step 5: Solve for x
    x = 336,378,109,571.54/508,840.16
  6. Step 6: Final answer
    x = 661,068.32

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.