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Finding the Fourth Proportional to 684,314.50, 944,334.39 and 378,385.54

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Solution

The fourth proportional to 684,314.50, 944,334.39 and 378,385.54 is: 522,161.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,314.50 : 944,334.39 = 378,385.54 : x
  2. Step 2: Convert to fraction form
    684,314.50/944,334.39 = 378,385.54/x
  3. Step 3: Cross multiply
    684,314.50x = 944,334.39 × 378,385.54
  4. Step 4: Simplify right side
    684,314.50x = 357,322,478,100.72
  5. Step 5: Solve for x
    x = 357,322,478,100.72/684,314.50
  6. Step 6: Final answer
    x = 522,161.20

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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.