Home / 657,948.06-907,971.30-356,142.06

Finding the Fourth Proportional to 657,948.06, 907,971.30 and 356,142.06

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Solution

The fourth proportional to 657,948.06, 907,971.30 and 356,142.06 is: 491,477.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,948.06 : 907,971.30 = 356,142.06 : x
  2. Step 2: Convert to fraction form
    657,948.06/907,971.30 = 356,142.06/x
  3. Step 3: Cross multiply
    657,948.06x = 907,971.30 × 356,142.06
  4. Step 4: Simplify right side
    657,948.06x = 323,366,769,202.88
  5. Step 5: Solve for x
    x = 323,366,769,202.88/657,948.06
  6. Step 6: Final answer
    x = 491,477.65

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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.