Home / 881,105.62-1,215,985.92-499,135.54

Finding the Fourth Proportional to 881,105.62, 1,215,985.92 and 499,135.54

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Solution

The fourth proportional to 881,105.62, 1,215,985.92 and 499,135.54 is: 688,841.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,105.62 : 1,215,985.92 = 499,135.54 : x
  2. Step 2: Convert to fraction form
    881,105.62/1,215,985.92 = 499,135.54/x
  3. Step 3: Cross multiply
    881,105.62x = 1,215,985.92 × 499,135.54
  4. Step 4: Simplify right side
    881,105.62x = 606,941,788,811.60
  5. Step 5: Solve for x
    x = 606,941,788,811.60/881,105.62
  6. Step 6: Final answer
    x = 688,841.13

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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.