Home / 690,170.15-952,188.29-399,623.12

Finding the Fourth Proportional to 690,170.15, 952,188.29 and 399,623.12

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Solution

The fourth proportional to 690,170.15, 952,188.29 and 399,623.12 is: 551,337.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,170.15 : 952,188.29 = 399,623.12 : x
  2. Step 2: Convert to fraction form
    690,170.15/952,188.29 = 399,623.12/x
  3. Step 3: Cross multiply
    690,170.15x = 952,188.29 × 399,623.12
  4. Step 4: Simplify right side
    690,170.15x = 380,516,453,279.15
  5. Step 5: Solve for x
    x = 380,516,453,279.15/690,170.15
  6. Step 6: Final answer
    x = 551,337.17

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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.