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Finding the Fourth Proportional to 669,078.79, 923,326.43 and 363,155.16

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Solution

The fourth proportional to 669,078.79, 923,326.43 and 363,155.16 is: 501,152.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,078.79 : 923,326.43 = 363,155.16 : x
  2. Step 2: Convert to fraction form
    669,078.79/923,326.43 = 363,155.16/x
  3. Step 3: Cross multiply
    669,078.79x = 923,326.43 × 363,155.16
  4. Step 4: Simplify right side
    669,078.79x = 335,310,756,702.36
  5. Step 5: Solve for x
    x = 335,310,756,702.36/669,078.79
  6. Step 6: Final answer
    x = 501,152.87

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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.