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Finding the Fourth Proportional to 535,717.42, 739,241.10 and 317,888.48

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Solution

The fourth proportional to 535,717.42, 739,241.10 and 317,888.48 is: 438,657.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,717.42 : 739,241.10 = 317,888.48 : x
  2. Step 2: Convert to fraction form
    535,717.42/739,241.10 = 317,888.48/x
  3. Step 3: Cross multiply
    535,717.42x = 739,241.10 × 317,888.48
  4. Step 4: Simplify right side
    535,717.42x = 234,996,231,480.63
  5. Step 5: Solve for x
    x = 234,996,231,480.63/535,717.42
  6. Step 6: Final answer
    x = 438,657.07

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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.