Home / 718,706.97-991,811.59-396,416.34

Finding the Fourth Proportional to 718,706.97, 991,811.59 and 396,416.34

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Solution

The fourth proportional to 718,706.97, 991,811.59 and 396,416.34 is: 547,052.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,706.97 : 991,811.59 = 396,416.34 : x
  2. Step 2: Convert to fraction form
    718,706.97/991,811.59 = 396,416.34/x
  3. Step 3: Cross multiply
    718,706.97x = 991,811.59 × 396,416.34
  4. Step 4: Simplify right side
    718,706.97x = 393,170,319,486.34
  5. Step 5: Solve for x
    x = 393,170,319,486.34/718,706.97
  6. Step 6: Final answer
    x = 547,052.33

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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.