Home / 1,215,736.17-1,677,754.50-664,439.78

Finding the Fourth Proportional to 1,215,736.17, 1,677,754.50 and 664,439.78

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Solution

The fourth proportional to 1,215,736.17, 1,677,754.50 and 664,439.78 is: 916,947.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,736.17 : 1,677,754.50 = 664,439.78 : x
  2. Step 2: Convert to fraction form
    1,215,736.17/1,677,754.50 = 664,439.78/x
  3. Step 3: Cross multiply
    1,215,736.17x = 1,677,754.50 × 664,439.78
  4. Step 4: Simplify right side
    1,215,736.17x = 1,114,766,822,485.24
  5. Step 5: Solve for x
    x = 1,114,766,822,485.24/1,215,736.17
  6. Step 6: Final answer
    x = 916,947.98

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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.