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Finding the Fourth Proportional to 669,430.21, 923,810.30 and 363,503.91

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Solution

The fourth proportional to 669,430.21, 923,810.30 and 363,503.91 is: 501,633.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,430.21 : 923,810.30 = 363,503.91 : x
  2. Step 2: Convert to fraction form
    669,430.21/923,810.30 = 363,503.91/x
  3. Step 3: Cross multiply
    669,430.21x = 923,810.30 × 363,503.91
  4. Step 4: Simplify right side
    669,430.21x = 335,808,656,148.27
  5. Step 5: Solve for x
    x = 335,808,656,148.27/669,430.21
  6. Step 6: Final answer
    x = 501,633.56

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.