Home / 642,444.39-886,536.12-355,947.39

Finding the Fourth Proportional to 642,444.39, 886,536.12 and 355,947.39

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Solution

The fourth proportional to 642,444.39, 886,536.12 and 355,947.39 is: 491,186.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,444.39 : 886,536.12 = 355,947.39 : x
  2. Step 2: Convert to fraction form
    642,444.39/886,536.12 = 355,947.39/x
  3. Step 3: Cross multiply
    642,444.39x = 886,536.12 × 355,947.39
  4. Step 4: Simplify right side
    642,444.39x = 315,560,218,054.73
  5. Step 5: Solve for x
    x = 315,560,218,054.73/642,444.39
  6. Step 6: Final answer
    x = 491,186.82

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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.