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Finding the Fourth Proportional to 657,861.67, 907,851.87 and 356,055.67

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Solution

The fourth proportional to 657,861.67, 907,851.87 and 356,055.67 is: 491,358.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,861.67 : 907,851.87 = 356,055.67 : x
  2. Step 2: Convert to fraction form
    657,861.67/907,851.87 = 356,055.67/x
  3. Step 3: Cross multiply
    657,861.67x = 907,851.87 × 356,055.67
  4. Step 4: Simplify right side
    657,861.67x = 323,245,805,833.60
  5. Step 5: Solve for x
    x = 323,245,805,833.60/657,861.67
  6. Step 6: Final answer
    x = 491,358.32

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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.