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Finding the Fourth Proportional to 648,163.70, 972,245.55 and 608,765.30

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Solution

The fourth proportional to 648,163.70, 972,245.55 and 608,765.30 is: 913,147.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,163.70 : 972,245.55 = 608,765.30 : x
  2. Step 2: Convert to fraction form
    648,163.70/972,245.55 = 608,765.30/x
  3. Step 3: Cross multiply
    648,163.70x = 972,245.55 × 608,765.30
  4. Step 4: Simplify right side
    648,163.70x = 591,869,353,919.42
  5. Step 5: Solve for x
    x = 591,869,353,919.42/648,163.70
  6. Step 6: Final answer
    x = 913,147.95

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Half scale
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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.