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Finding the Fourth Proportional to 485,325.49, 669,799.26 and 291,796.51

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Solution

The fourth proportional to 485,325.49, 669,799.26 and 291,796.51 is: 402,709.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,325.49 : 669,799.26 = 291,796.51 : x
  2. Step 2: Convert to fraction form
    485,325.49/669,799.26 = 291,796.51/x
  3. Step 3: Cross multiply
    485,325.49x = 669,799.26 × 291,796.51
  4. Step 4: Simplify right side
    485,325.49x = 195,445,086,468.58
  5. Step 5: Solve for x
    x = 195,445,086,468.58/485,325.49
  6. Step 6: Final answer
    x = 402,709.30

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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.