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Finding the Fourth Proportional to 664,958.80, 997,438.20 and 507,494.80

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Solution

The fourth proportional to 664,958.80, 997,438.20 and 507,494.80 is: 761,242.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,958.80 : 997,438.20 = 507,494.80 : x
  2. Step 2: Convert to fraction form
    664,958.80/997,438.20 = 507,494.80/x
  3. Step 3: Cross multiply
    664,958.80x = 997,438.20 × 507,494.80
  4. Step 4: Simplify right side
    664,958.80x = 506,194,699,821.36
  5. Step 5: Solve for x
    x = 506,194,699,821.36/664,958.80
  6. Step 6: Final answer
    x = 761,242.20

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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.