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Finding the Fourth Proportional to 668,906.70, 923,088.45 and 362,980.90

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Solution

The fourth proportional to 668,906.70, 923,088.45 and 362,980.90 is: 500,912.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,906.70 : 923,088.45 = 362,980.90 : x
  2. Step 2: Convert to fraction form
    668,906.70/923,088.45 = 362,980.90/x
  3. Step 3: Cross multiply
    668,906.70x = 923,088.45 × 362,980.90
  4. Step 4: Simplify right side
    668,906.70x = 335,063,476,360.61
  5. Step 5: Solve for x
    x = 335,063,476,360.61/668,906.70
  6. Step 6: Final answer
    x = 500,912.12

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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.