Home / 881,101.62-1,215,980.37-499,131.54

Finding the Fourth Proportional to 881,101.62, 1,215,980.37 and 499,131.54

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Solution

The fourth proportional to 881,101.62, 1,215,980.37 and 499,131.54 is: 688,835.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,101.62 : 1,215,980.37 = 499,131.54 : x
  2. Step 2: Convert to fraction form
    881,101.62/1,215,980.37 = 499,131.54/x
  3. Step 3: Cross multiply
    881,101.62x = 1,215,980.37 × 499,131.54
  4. Step 4: Simplify right side
    881,101.62x = 606,934,154,687.87
  5. Step 5: Solve for x
    x = 606,934,154,687.87/881,101.62
  6. Step 6: Final answer
    x = 688,835.59

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.