Home / 808,635.60-1,211,203.80-434,221.20

Finding the Fourth Proportional to 808,635.60, 1,211,203.80 and 434,221.20

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Solution

The fourth proportional to 808,635.60, 1,211,203.80 and 434,221.20 is: 650,392.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,635.60 : 1,211,203.80 = 434,221.20 : x
  2. Step 2: Convert to fraction form
    808,635.60/1,211,203.80 = 434,221.20/x
  3. Step 3: Cross multiply
    808,635.60x = 1,211,203.80 × 434,221.20
  4. Step 4: Simplify right side
    808,635.60x = 525,930,367,480.56
  5. Step 5: Solve for x
    x = 525,930,367,480.56/808,635.60
  6. Step 6: Final answer
    x = 650,392.30

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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.