Home / 714,216.11-985,633.29-391,923.39

Finding the Fourth Proportional to 714,216.11, 985,633.29 and 391,923.39

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Solution

The fourth proportional to 714,216.11, 985,633.29 and 391,923.39 is: 540,862.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,216.11 : 985,633.29 = 391,923.39 : x
  2. Step 2: Convert to fraction form
    714,216.11/985,633.29 = 391,923.39/x
  3. Step 3: Cross multiply
    714,216.11x = 985,633.29 × 391,923.39
  4. Step 4: Simplify right side
    714,216.11x = 386,292,740,313.65
  5. Step 5: Solve for x
    x = 386,292,740,313.65/714,216.11
  6. Step 6: Final answer
    x = 540,862.55

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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.