Home / 714,197.40-985,544.19-391,928.15

Finding the Fourth Proportional to 714,197.40, 985,544.19 and 391,928.15

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Solution

The fourth proportional to 714,197.40, 985,544.19 and 391,928.15 is: 540,834.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,197.40 : 985,544.19 = 391,928.15 : x
  2. Step 2: Convert to fraction form
    714,197.40/985,544.19 = 391,928.15/x
  3. Step 3: Cross multiply
    714,197.40x = 985,544.19 × 391,928.15
  4. Step 4: Simplify right side
    714,197.40x = 386,262,511,129.95
  5. Step 5: Solve for x
    x = 386,262,511,129.95/714,197.40
  6. Step 6: Final answer
    x = 540,834.38

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Half scale
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Double scale
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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.