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Finding the Fourth Proportional to 684,279.84, 944,268.08 and 378,338.48

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Solution

The fourth proportional to 684,279.84, 944,268.08 and 378,338.48 is: 522,086.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,279.84 : 944,268.08 = 378,338.48 : x
  2. Step 2: Convert to fraction form
    684,279.84/944,268.08 = 378,338.48/x
  3. Step 3: Cross multiply
    684,279.84x = 944,268.08 × 378,338.48
  4. Step 4: Simplify right side
    684,279.84x = 357,252,950,099.72
  5. Step 5: Solve for x
    x = 357,252,950,099.72/684,279.84
  6. Step 6: Final answer
    x = 522,086.04

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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.