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Finding the Fourth Proportional to 684,203.20, 944,246.64 and 397,722.40

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Solution

The fourth proportional to 684,203.20, 944,246.64 and 397,722.40 is: 548,883.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,203.20 : 944,246.64 = 397,722.40 : x
  2. Step 2: Convert to fraction form
    684,203.20/944,246.64 = 397,722.40/x
  3. Step 3: Cross multiply
    684,203.20x = 944,246.64 × 397,722.40
  4. Step 4: Simplify right side
    684,203.20x = 375,548,039,852.74
  5. Step 5: Solve for x
    x = 375,548,039,852.74/684,203.20
  6. Step 6: Final answer
    x = 548,883.78

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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.