Home / 718,016.60-990,822.48-395,725.70

Finding the Fourth Proportional to 718,016.60, 990,822.48 and 395,725.70

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Solution

The fourth proportional to 718,016.60, 990,822.48 and 395,725.70 is: 546,079.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,016.60 : 990,822.48 = 395,725.70 : x
  2. Step 2: Convert to fraction form
    718,016.60/990,822.48 = 395,725.70/x
  3. Step 3: Cross multiply
    718,016.60x = 990,822.48 × 395,725.70
  4. Step 4: Simplify right side
    718,016.60x = 392,093,919,473.74
  5. Step 5: Solve for x
    x = 392,093,919,473.74/718,016.60
  6. Step 6: Final answer
    x = 546,079.18

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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.