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Finding the Fourth Proportional to 647,574, 893,652.12 and 379,302

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Solution

The fourth proportional to 647,574, 893,652.12 and 379,302 is: 523,436.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,574 : 893,652.12 = 379,302 : x
  2. Step 2: Convert to fraction form
    647,574/893,652.12 = 379,302/x
  3. Step 3: Cross multiply
    647,574x = 893,652.12 × 379,302
  4. Step 4: Simplify right side
    647,574x = 338,964,036,420.24
  5. Step 5: Solve for x
    x = 338,964,036,420.24/647,574
  6. Step 6: Final answer
    x = 523,436.76

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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.