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Finding the Fourth Proportional to 712,493.88, 983,243 and 385,810.44

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Solution

The fourth proportional to 712,493.88, 983,243 and 385,810.44 is: 532,419.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,493.88 : 983,243 = 385,810.44 : x
  2. Step 2: Convert to fraction form
    712,493.88/983,243 = 385,810.44/x
  3. Step 3: Cross multiply
    712,493.88x = 983,243 × 385,810.44
  4. Step 4: Simplify right side
    712,493.88x = 379,345,414,456.92
  5. Step 5: Solve for x
    x = 379,345,414,456.92/712,493.88
  6. Step 6: Final answer
    x = 532,419.19

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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.