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Finding the Fourth Proportional to 668,920.40, 923,105.32 and 362,989.07

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Solution

The fourth proportional to 668,920.40, 923,105.32 and 362,989.07 is: 500,922.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,920.40 : 923,105.32 = 362,989.07 : x
  2. Step 2: Convert to fraction form
    668,920.40/923,105.32 = 362,989.07/x
  3. Step 3: Cross multiply
    668,920.40x = 923,105.32 × 362,989.07
  4. Step 4: Simplify right side
    668,920.40x = 335,077,136,095.85
  5. Step 5: Solve for x
    x = 335,077,136,095.85/668,920.40
  6. Step 6: Final answer
    x = 500,922.29

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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.