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Finding the Fourth Proportional to 657,851.75, 907,857.42 and 403,153.73

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Solution

The fourth proportional to 657,851.75, 907,857.42 and 403,153.73 is: 556,365.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,851.75 : 907,857.42 = 403,153.73 : x
  2. Step 2: Convert to fraction form
    657,851.75/907,857.42 = 403,153.73/x
  3. Step 3: Cross multiply
    657,851.75x = 907,857.42 × 403,153.73
  4. Step 4: Simplify right side
    657,851.75x = 366,006,105,181.18
  5. Step 5: Solve for x
    x = 366,006,105,181.18/657,851.75
  6. Step 6: Final answer
    x = 556,365.63

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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.