Home / 861,172.56-1,290,920.76-411,777.36

Finding the Fourth Proportional to 861,172.56, 1,290,920.76 and 411,777.36

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Solution

The fourth proportional to 861,172.56, 1,290,920.76 and 411,777.36 is: 617,265.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,172.56 : 1,290,920.76 = 411,777.36 : x
  2. Step 2: Convert to fraction form
    861,172.56/1,290,920.76 = 411,777.36/x
  3. Step 3: Cross multiply
    861,172.56x = 1,290,920.76 × 411,777.36
  4. Step 4: Simplify right side
    861,172.56x = 531,571,942,521.99
  5. Step 5: Solve for x
    x = 531,571,942,521.99/861,172.56
  6. Step 6: Final answer
    x = 617,265.30

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1.5x scale

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.