Home / 808,713.20-1,213,069.80-310,077.20

Finding the Fourth Proportional to 808,713.20, 1,213,069.80 and 310,077.20

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Solution

The fourth proportional to 808,713.20, 1,213,069.80 and 310,077.20 is: 465,115.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,713.20 : 1,213,069.80 = 310,077.20 : x
  2. Step 2: Convert to fraction form
    808,713.20/1,213,069.80 = 310,077.20/x
  3. Step 3: Cross multiply
    808,713.20x = 1,213,069.80 × 310,077.20
  4. Step 4: Simplify right side
    808,713.20x = 376,145,286,988.56
  5. Step 5: Solve for x
    x = 376,145,286,988.56/808,713.20
  6. Step 6: Final answer
    x = 465,115.80

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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.