Home / 1,261,125.60-1,891,918.80-513,247.20

Finding the Fourth Proportional to 1,261,125.60, 1,891,918.80 and 513,247.20

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Solution

The fourth proportional to 1,261,125.60, 1,891,918.80 and 513,247.20 is: 769,964.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,125.60 : 1,891,918.80 = 513,247.20 : x
  2. Step 2: Convert to fraction form
    1,261,125.60/1,891,918.80 = 513,247.20/x
  3. Step 3: Cross multiply
    1,261,125.60x = 1,891,918.80 × 513,247.20
  4. Step 4: Simplify right side
    1,261,125.60x = 971,022,026,727.36
  5. Step 5: Solve for x
    x = 971,022,026,727.36/1,261,125.60
  6. Step 6: Final answer
    x = 769,964.57

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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.