Home / 718,106.87-990,975.65-395,846.96

Finding the Fourth Proportional to 718,106.87, 990,975.65 and 395,846.96

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Solution

The fourth proportional to 718,106.87, 990,975.65 and 395,846.96 is: 546,262.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,106.87 : 990,975.65 = 395,846.96 : x
  2. Step 2: Convert to fraction form
    718,106.87/990,975.65 = 395,846.96/x
  3. Step 3: Cross multiply
    718,106.87x = 990,975.65 × 395,846.96
  4. Step 4: Simplify right side
    718,106.87x = 392,274,691,552.41
  5. Step 5: Solve for x
    x = 392,274,691,552.41/718,106.87
  6. Step 6: Final answer
    x = 546,262.27

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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.