Home / 712,820.31-983,692.79-386,134.08

Finding the Fourth Proportional to 712,820.31, 983,692.79 and 386,134.08

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Solution

The fourth proportional to 712,820.31, 983,692.79 and 386,134.08 is: 532,865.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,820.31 : 983,692.79 = 386,134.08 : x
  2. Step 2: Convert to fraction form
    712,820.31/983,692.79 = 386,134.08/x
  3. Step 3: Cross multiply
    712,820.31x = 983,692.79 × 386,134.08
  4. Step 4: Simplify right side
    712,820.31x = 379,837,310,469.28
  5. Step 5: Solve for x
    x = 379,837,310,469.28/712,820.31
  6. Step 6: Final answer
    x = 532,865.44

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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.