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Finding the Fourth Proportional to 813,394, 1,122,481.56 and 450,818.56

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Solution

The fourth proportional to 813,394, 1,122,481.56 and 450,818.56 is: 622,128.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,394 : 1,122,481.56 = 450,818.56 : x
  2. Step 2: Convert to fraction form
    813,394/1,122,481.56 = 450,818.56/x
  3. Step 3: Cross multiply
    813,394x = 1,122,481.56 × 450,818.56
  4. Step 4: Simplify right side
    813,394x = 506,035,520,505.75
  5. Step 5: Solve for x
    x = 506,035,520,505.75/813,394
  6. Step 6: Final answer
    x = 622,128.42

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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.