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Finding the Fourth Proportional to 712,042.71, 982,620.39 and 389,773.38

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Solution

The fourth proportional to 712,042.71, 982,620.39 and 389,773.38 is: 537,888.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,042.71 : 982,620.39 = 389,773.38 : x
  2. Step 2: Convert to fraction form
    712,042.71/982,620.39 = 389,773.38/x
  3. Step 3: Cross multiply
    712,042.71x = 982,620.39 × 389,773.38
  4. Step 4: Simplify right side
    712,042.71x = 382,999,270,667.22
  5. Step 5: Solve for x
    x = 382,999,270,667.22/712,042.71
  6. Step 6: Final answer
    x = 537,888.06

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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.