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Finding the Fourth Proportional to 684,279.34, 944,238.90 and 378,313.82

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Solution

The fourth proportional to 684,279.34, 944,238.90 and 378,313.82 is: 522,036.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,279.34 : 944,238.90 = 378,313.82 : x
  2. Step 2: Convert to fraction form
    684,279.34/944,238.90 = 378,313.82/x
  3. Step 3: Cross multiply
    684,279.34x = 944,238.90 × 378,313.82
  4. Step 4: Simplify right side
    684,279.34x = 357,218,627,850.57
  5. Step 5: Solve for x
    x = 357,218,627,850.57/684,279.34
  6. Step 6: Final answer
    x = 522,036.26

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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.