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Finding the Fourth Proportional to 835,809.20, 1,254,251.40 and 462,100.40

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Solution

The fourth proportional to 835,809.20, 1,254,251.40 and 462,100.40 is: 693,447.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    835,809.20 : 1,254,251.40 = 462,100.40 : x
  2. Step 2: Convert to fraction form
    835,809.20/1,254,251.40 = 462,100.40/x
  3. Step 3: Cross multiply
    835,809.20x = 1,254,251.40 × 462,100.40
  4. Step 4: Simplify right side
    835,809.20x = 579,590,073,640.56
  5. Step 5: Solve for x
    x = 579,590,073,640.56/835,809.20
  6. Step 6: Final answer
    x = 693,447.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.