Home / 807,145.20-1,209,853.80-274,172.40

Finding the Fourth Proportional to 807,145.20, 1,209,853.80 and 274,172.40

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Solution

The fourth proportional to 807,145.20, 1,209,853.80 and 274,172.40 is: 410,965.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,145.20 : 1,209,853.80 = 274,172.40 : x
  2. Step 2: Convert to fraction form
    807,145.20/1,209,853.80 = 274,172.40/x
  3. Step 3: Cross multiply
    807,145.20x = 1,209,853.80 × 274,172.40
  4. Step 4: Simplify right side
    807,145.20x = 331,708,519,995.12
  5. Step 5: Solve for x
    x = 331,708,519,995.12/807,145.20
  6. Step 6: Final answer
    x = 410,965.12

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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.