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Finding the Fourth Proportional to 684,357.42, 944,419.35 and 378,454.50

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Solution

The fourth proportional to 684,357.42, 944,419.35 and 378,454.50 is: 522,270.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,357.42 : 944,419.35 = 378,454.50 : x
  2. Step 2: Convert to fraction form
    684,357.42/944,419.35 = 378,454.50/x
  3. Step 3: Cross multiply
    684,357.42x = 944,419.35 × 378,454.50
  4. Step 4: Simplify right side
    684,357.42x = 357,419,752,894.58
  5. Step 5: Solve for x
    x = 357,419,752,894.58/684,357.42
  6. Step 6: Final answer
    x = 522,270.59

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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.