Home / 664,972.85-997,599.35-215,658.67

Finding the Fourth Proportional to 664,972.85, 997,599.35 and 215,658.67

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Solution

The fourth proportional to 664,972.85, 997,599.35 and 215,658.67 is: 323,533.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,972.85 : 997,599.35 = 215,658.67 : x
  2. Step 2: Convert to fraction form
    664,972.85/997,599.35 = 215,658.67/x
  3. Step 3: Cross multiply
    664,972.85x = 997,599.35 × 215,658.67
  4. Step 4: Simplify right side
    664,972.85x = 215,140,949,013.87
  5. Step 5: Solve for x
    x = 215,140,949,013.87/664,972.85
  6. Step 6: Final answer
    x = 323,533.43

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Double scale
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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.