Home / 923,146.32-1,274,006.14-515,327.78

Finding the Fourth Proportional to 923,146.32, 1,274,006.14 and 515,327.78

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Solution

The fourth proportional to 923,146.32, 1,274,006.14 and 515,327.78 is: 711,188.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    923,146.32 : 1,274,006.14 = 515,327.78 : x
  2. Step 2: Convert to fraction form
    923,146.32/1,274,006.14 = 515,327.78/x
  3. Step 3: Cross multiply
    923,146.32x = 1,274,006.14 × 515,327.78
  4. Step 4: Simplify right side
    923,146.32x = 656,530,755,832.57
  5. Step 5: Solve for x
    x = 656,530,755,832.57/923,146.32
  6. Step 6: Final answer
    x = 711,188.19

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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.