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Finding the Fourth Proportional to 654,963.66, 903,801.51 and 368,428.59

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Solution

The fourth proportional to 654,963.66, 903,801.51 and 368,428.59 is: 508,404.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,963.66 : 903,801.51 = 368,428.59 : x
  2. Step 2: Convert to fraction form
    654,963.66/903,801.51 = 368,428.59/x
  3. Step 3: Cross multiply
    654,963.66x = 903,801.51 × 368,428.59
  4. Step 4: Simplify right side
    654,963.66x = 332,986,315,969.17
  5. Step 5: Solve for x
    x = 332,986,315,969.17/654,963.66
  6. Step 6: Final answer
    x = 508,404.26

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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.