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Finding the Fourth Proportional to 684,203.45, 944,246.99 and 397,722.65

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Solution

The fourth proportional to 684,203.45, 944,246.99 and 397,722.65 is: 548,884.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,203.45 : 944,246.99 = 397,722.65 : x
  2. Step 2: Convert to fraction form
    684,203.45/944,246.99 = 397,722.65/x
  3. Step 3: Cross multiply
    684,203.45x = 944,246.99 × 397,722.65
  4. Step 4: Simplify right side
    684,203.45x = 375,548,413,128.71
  5. Step 5: Solve for x
    x = 375,548,413,128.71/684,203.45
  6. Step 6: Final answer
    x = 548,884.13

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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.