Home / 881,112.89-1,215,983.85-499,214.09

Finding the Fourth Proportional to 881,112.89, 1,215,983.85 and 499,214.09

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Solution

The fourth proportional to 881,112.89, 1,215,983.85 and 499,214.09 is: 688,942.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,112.89 : 1,215,983.85 = 499,214.09 : x
  2. Step 2: Convert to fraction form
    881,112.89/1,215,983.85 = 499,214.09/x
  3. Step 3: Cross multiply
    881,112.89x = 1,215,983.85 × 499,214.09
  4. Step 4: Simplify right side
    881,112.89x = 607,036,271,132.45
  5. Step 5: Solve for x
    x = 607,036,271,132.45/881,112.89
  6. Step 6: Final answer
    x = 688,942.67

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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.