Home / 1,239,629.10-1,859,962.05-398,438.70

Finding the Fourth Proportional to 1,239,629.10, 1,859,962.05 and 398,438.70

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Solution

The fourth proportional to 1,239,629.10, 1,859,962.05 and 398,438.70 is: 597,824.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,629.10 : 1,859,962.05 = 398,438.70 : x
  2. Step 2: Convert to fraction form
    1,239,629.10/1,859,962.05 = 398,438.70/x
  3. Step 3: Cross multiply
    1,239,629.10x = 1,859,962.05 × 398,438.70
  4. Step 4: Simplify right side
    1,239,629.10x = 741,080,861,251.34
  5. Step 5: Solve for x
    x = 741,080,861,251.34/1,239,629.10
  6. Step 6: Final answer
    x = 597,824.67

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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.