Home / 684,859.34-945,083.05-378,936.31

Finding the Fourth Proportional to 684,859.34, 945,083.05 and 378,936.31

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Solution

The fourth proportional to 684,859.34, 945,083.05 and 378,936.31 is: 522,919.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,859.34 : 945,083.05 = 378,936.31 : x
  2. Step 2: Convert to fraction form
    684,859.34/945,083.05 = 378,936.31/x
  3. Step 3: Cross multiply
    684,859.34x = 945,083.05 × 378,936.31
  4. Step 4: Simplify right side
    684,859.34x = 358,126,283,610.55
  5. Step 5: Solve for x
    x = 358,126,283,610.55/684,859.34
  6. Step 6: Final answer
    x = 522,919.47

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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.