Home / 714,255.19-985,669.22-391,970.57

Finding the Fourth Proportional to 714,255.19, 985,669.22 and 391,970.57

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Solution

The fourth proportional to 714,255.19, 985,669.22 and 391,970.57 is: 540,917.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,255.19 : 985,669.22 = 391,970.57 : x
  2. Step 2: Convert to fraction form
    714,255.19/985,669.22 = 391,970.57/x
  3. Step 3: Cross multiply
    714,255.19x = 985,669.22 × 391,970.57
  4. Step 4: Simplify right side
    714,255.19x = 386,353,322,046.44
  5. Step 5: Solve for x
    x = 386,353,322,046.44/714,255.19
  6. Step 6: Final answer
    x = 540,917.77

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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.