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Finding the Fourth Proportional to 684,431.37, 944,521.56 and 378,491.94

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Solution

The fourth proportional to 684,431.37, 944,521.56 and 378,491.94 is: 522,322.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,431.37 : 944,521.56 = 378,491.94 : x
  2. Step 2: Convert to fraction form
    684,431.37/944,521.56 = 378,491.94/x
  3. Step 3: Cross multiply
    684,431.37x = 944,521.56 × 378,491.94
  4. Step 4: Simplify right side
    684,431.37x = 357,493,797,616.23
  5. Step 5: Solve for x
    x = 357,493,797,616.23/684,431.37
  6. Step 6: Final answer
    x = 522,322.34

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Double scale
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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.