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Finding the Fourth Proportional to 664,307.70, 996,461.55 and 365,709.30

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Solution

The fourth proportional to 664,307.70, 996,461.55 and 365,709.30 is: 548,563.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,307.70 : 996,461.55 = 365,709.30 : x
  2. Step 2: Convert to fraction form
    664,307.70/996,461.55 = 365,709.30/x
  3. Step 3: Cross multiply
    664,307.70x = 996,461.55 × 365,709.30
  4. Step 4: Simplify right side
    664,307.70x = 364,415,255,927.42
  5. Step 5: Solve for x
    x = 364,415,255,927.42/664,307.70
  6. Step 6: Final answer
    x = 548,563.95

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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.