Home / 811,166.20-1,216,777.55-278,683.34

Finding the Fourth Proportional to 811,166.20, 1,216,777.55 and 278,683.34

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Solution

The fourth proportional to 811,166.20, 1,216,777.55 and 278,683.34 is: 418,034.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,166.20 : 1,216,777.55 = 278,683.34 : x
  2. Step 2: Convert to fraction form
    811,166.20/1,216,777.55 = 278,683.34/x
  3. Step 3: Cross multiply
    811,166.20x = 1,216,777.55 × 278,683.34
  4. Step 4: Simplify right side
    811,166.20x = 339,095,624,193.71
  5. Step 5: Solve for x
    x = 339,095,624,193.71/811,166.20
  6. Step 6: Final answer
    x = 418,034.71

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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.