Home / 811,334.41-1,216,690.21-278,756.17

Finding the Fourth Proportional to 811,334.41, 1,216,690.21 and 278,756.17

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Solution

The fourth proportional to 811,334.41, 1,216,690.21 and 278,756.17 is: 418,027.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,334.41 : 1,216,690.21 = 278,756.17 : x
  2. Step 2: Convert to fraction form
    811,334.41/1,216,690.21 = 278,756.17/x
  3. Step 3: Cross multiply
    811,334.41x = 1,216,690.21 × 278,756.17
  4. Step 4: Simplify right side
    811,334.41x = 339,159,896,235.75
  5. Step 5: Solve for x
    x = 339,159,896,235.75/811,334.41
  6. Step 6: Final answer
    x = 418,027.26

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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.