Home / 808,810.20-1,214,199.45-409,245.30

Finding the Fourth Proportional to 808,810.20, 1,214,199.45 and 409,245.30

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Solution

The fourth proportional to 808,810.20, 1,214,199.45 and 409,245.30 is: 614,365.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,810.20 : 1,214,199.45 = 409,245.30 : x
  2. Step 2: Convert to fraction form
    808,810.20/1,214,199.45 = 409,245.30/x
  3. Step 3: Cross multiply
    808,810.20x = 1,214,199.45 × 409,245.30
  4. Step 4: Simplify right side
    808,810.20x = 496,905,418,175.09
  5. Step 5: Solve for x
    x = 496,905,418,175.09/808,810.20
  6. Step 6: Final answer
    x = 614,365.91

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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.