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Finding the Fourth Proportional to 657,792.97, 907,754.29 and 355,986.97

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Solution

The fourth proportional to 657,792.97, 907,754.29 and 355,986.97 is: 491,262.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,792.97 : 907,754.29 = 355,986.97 : x
  2. Step 2: Convert to fraction form
    657,792.97/907,754.29 = 355,986.97/x
  3. Step 3: Cross multiply
    657,792.97x = 907,754.29 × 355,986.97
  4. Step 4: Simplify right side
    657,792.97x = 323,148,698,311.63
  5. Step 5: Solve for x
    x = 323,148,698,311.63/657,792.97
  6. Step 6: Final answer
    x = 491,262.01

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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.