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Finding the Fourth Proportional to 712,040.22, 982,616.58 and 389,770.72

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Solution

The fourth proportional to 712,040.22, 982,616.58 and 389,770.72 is: 537,884.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,040.22 : 982,616.58 = 389,770.72 : x
  2. Step 2: Convert to fraction form
    712,040.22/982,616.58 = 389,770.72/x
  3. Step 3: Cross multiply
    712,040.22x = 982,616.58 × 389,770.72
  4. Step 4: Simplify right side
    712,040.22x = 382,995,171,870.54
  5. Step 5: Solve for x
    x = 382,995,171,870.54/712,040.22
  6. Step 6: Final answer
    x = 537,884.18

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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.