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Finding the Fourth Proportional to 657,744.76, 907,687.75 and 355,938.76

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Solution

The fourth proportional to 657,744.76, 907,687.75 and 355,938.76 is: 491,195.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,744.76 : 907,687.75 = 355,938.76 : x
  2. Step 2: Convert to fraction form
    657,744.76/907,687.75 = 355,938.76/x
  3. Step 3: Cross multiply
    657,744.76x = 907,687.75 × 355,938.76
  4. Step 4: Simplify right side
    657,744.76x = 323,081,252,202.19
  5. Step 5: Solve for x
    x = 323,081,252,202.19/657,744.76
  6. Step 6: Final answer
    x = 491,195.48

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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.