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Finding the Fourth Proportional to 669,330.15, 923,670.21 and 363,400.47

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Solution

The fourth proportional to 669,330.15, 923,670.21 and 363,400.47 is: 501,489.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,330.15 : 923,670.21 = 363,400.47 : x
  2. Step 2: Convert to fraction form
    669,330.15/923,670.21 = 363,400.47/x
  3. Step 3: Cross multiply
    669,330.15x = 923,670.21 × 363,400.47
  4. Step 4: Simplify right side
    669,330.15x = 335,662,188,439.00
  5. Step 5: Solve for x
    x = 335,662,188,439.00/669,330.15
  6. Step 6: Final answer
    x = 501,489.72

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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.