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Finding the Fourth Proportional to 684,309.44, 944,264.61 and 378,344.50

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Solution

The fourth proportional to 684,309.44, 944,264.61 and 378,344.50 is: 522,069.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,309.44 : 944,264.61 = 378,344.50 : x
  2. Step 2: Convert to fraction form
    684,309.44/944,264.61 = 378,344.50/x
  3. Step 3: Cross multiply
    684,309.44x = 944,264.61 × 378,344.50
  4. Step 4: Simplify right side
    684,309.44x = 357,257,321,738.15
  5. Step 5: Solve for x
    x = 357,257,321,738.15/684,309.44
  6. Step 6: Final answer
    x = 522,069.84

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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.