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Finding the Fourth Proportional to 657,860.67, 907,850.49 and 356,054.67

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Solution

The fourth proportional to 657,860.67, 907,850.49 and 356,054.67 is: 491,356.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,860.67 : 907,850.49 = 356,054.67 : x
  2. Step 2: Convert to fraction form
    657,860.67/907,850.49 = 356,054.67/x
  3. Step 3: Cross multiply
    657,860.67x = 907,850.49 × 356,054.67
  4. Step 4: Simplify right side
    657,860.67x = 323,244,406,626.29
  5. Step 5: Solve for x
    x = 323,244,406,626.29/657,860.67
  6. Step 6: Final answer
    x = 491,356.94

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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.