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Finding the Fourth Proportional to 508,851.74, 766,935.17 and 438,622.01

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Solution

The fourth proportional to 508,851.74, 766,935.17 and 438,622.01 is: 661,085.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,851.74 : 766,935.17 = 438,622.01 : x
  2. Step 2: Convert to fraction form
    508,851.74/766,935.17 = 438,622.01/x
  3. Step 3: Cross multiply
    508,851.74x = 766,935.17 × 438,622.01
  4. Step 4: Simplify right side
    508,851.74x = 336,394,639,777.31
  5. Step 5: Solve for x
    x = 336,394,639,777.31/508,851.74
  6. Step 6: Final answer
    x = 661,085.77

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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.