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Finding the Fourth Proportional to 712,019.07, 982,578.02 and 385,324.52

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Solution

The fourth proportional to 712,019.07, 982,578.02 and 385,324.52 is: 531,743.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,019.07 : 982,578.02 = 385,324.52 : x
  2. Step 2: Convert to fraction form
    712,019.07/982,578.02 = 385,324.52/x
  3. Step 3: Cross multiply
    712,019.07x = 982,578.02 × 385,324.52
  4. Step 4: Simplify right side
    712,019.07x = 378,611,397,079.54
  5. Step 5: Solve for x
    x = 378,611,397,079.54/712,019.07
  6. Step 6: Final answer
    x = 531,743.34

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1.5x scale

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.