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Finding the Fourth Proportional to 902,349, 1,245,123 and 539,640.36

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Solution

The fourth proportional to 902,349, 1,245,123 and 539,640.36 is: 744,632.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    902,349 : 1,245,123 = 539,640.36 : x
  2. Step 2: Convert to fraction form
    902,349/1,245,123 = 539,640.36/x
  3. Step 3: Cross multiply
    902,349x = 1,245,123 × 539,640.36
  4. Step 4: Simplify right side
    902,349x = 671,918,623,964.28
  5. Step 5: Solve for x
    x = 671,918,623,964.28/902,349
  6. Step 6: Final answer
    x = 744,632.76

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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.