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Finding the Fourth Proportional to 493,105.70, 739,658.55 and 404,459.30

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Solution

The fourth proportional to 493,105.70, 739,658.55 and 404,459.30 is: 606,688.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,105.70 : 739,658.55 = 404,459.30 : x
  2. Step 2: Convert to fraction form
    493,105.70/739,658.55 = 404,459.30/x
  3. Step 3: Cross multiply
    493,105.70x = 739,658.55 × 404,459.30
  4. Step 4: Simplify right side
    493,105.70x = 299,161,779,372.02
  5. Step 5: Solve for x
    x = 299,161,779,372.02/493,105.70
  6. Step 6: Final answer
    x = 606,688.95

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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.