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Finding the Fourth Proportional to 657,792.10, 907,753.08 and 355,986.10

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Solution

The fourth proportional to 657,792.10, 907,753.08 and 355,986.10 is: 491,260.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,792.10 : 907,753.08 = 355,986.10 : x
  2. Step 2: Convert to fraction form
    657,792.10/907,753.08 = 355,986.10/x
  3. Step 3: Cross multiply
    657,792.10x = 907,753.08 × 355,986.10
  4. Step 4: Simplify right side
    657,792.10x = 323,147,475,063.39
  5. Step 5: Solve for x
    x = 323,147,475,063.39/657,792.10
  6. Step 6: Final answer
    x = 491,260.81

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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.