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Finding the Fourth Proportional to 684,309, 944,326.80 and 378,380.04

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Solution

The fourth proportional to 684,309, 944,326.80 and 378,380.04 is: 522,153.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,309 : 944,326.80 = 378,380.04 : x
  2. Step 2: Convert to fraction form
    684,309/944,326.80 = 378,380.04/x
  3. Step 3: Cross multiply
    684,309x = 944,326.80 × 378,380.04
  4. Step 4: Simplify right side
    684,309x = 357,314,412,357.07
  5. Step 5: Solve for x
    x = 357,314,412,357.07/684,309
  6. Step 6: Final answer
    x = 522,153.61

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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.