Home / 1,211,756.40-1,817,634.60-413,938.80

Finding the Fourth Proportional to 1,211,756.40, 1,817,634.60 and 413,938.80

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Solution

The fourth proportional to 1,211,756.40, 1,817,634.60 and 413,938.80 is: 620,908.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,756.40 : 1,817,634.60 = 413,938.80 : x
  2. Step 2: Convert to fraction form
    1,211,756.40/1,817,634.60 = 413,938.80/x
  3. Step 3: Cross multiply
    1,211,756.40x = 1,817,634.60 × 413,938.80
  4. Step 4: Simplify right side
    1,211,756.40x = 752,389,485,162.48
  5. Step 5: Solve for x
    x = 752,389,485,162.48/1,211,756.40
  6. Step 6: Final answer
    x = 620,908.20

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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.