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Finding the Fourth Proportional to 684,299.76, 944,305.56 and 378,356.64

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Solution

The fourth proportional to 684,299.76, 944,305.56 and 378,356.64 is: 522,116.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,299.76 : 944,305.56 = 378,356.64 : x
  2. Step 2: Convert to fraction form
    684,299.76/944,305.56 = 378,356.64/x
  3. Step 3: Cross multiply
    684,299.76x = 944,305.56 × 378,356.64
  4. Step 4: Simplify right side
    684,299.76x = 357,284,278,814.92
  5. Step 5: Solve for x
    x = 357,284,278,814.92/684,299.76
  6. Step 6: Final answer
    x = 522,116.62

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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.