Home / 840,031.85-1,260,052.32-208,945.67

Finding the Fourth Proportional to 840,031.85, 1,260,052.32 and 208,945.67

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Solution

The fourth proportional to 840,031.85, 1,260,052.32 and 208,945.67 is: 313,419.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,031.85 : 1,260,052.32 = 208,945.67 : x
  2. Step 2: Convert to fraction form
    840,031.85/1,260,052.32 = 208,945.67/x
  3. Step 3: Cross multiply
    840,031.85x = 1,260,052.32 × 208,945.67
  4. Step 4: Simplify right side
    840,031.85x = 263,282,469,937.19
  5. Step 5: Solve for x
    x = 263,282,469,937.19/840,031.85
  6. Step 6: Final answer
    x = 313,419.63

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Double scale
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Similar ratio
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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.