Home / 720,225.27-993,884.09-397,928.43

Finding the Fourth Proportional to 720,225.27, 993,884.09 and 397,928.43

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Solution

The fourth proportional to 720,225.27, 993,884.09 and 397,928.43 is: 549,126.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,225.27 : 993,884.09 = 397,928.43 : x
  2. Step 2: Convert to fraction form
    720,225.27/993,884.09 = 397,928.43/x
  3. Step 3: Cross multiply
    720,225.27x = 993,884.09 × 397,928.43
  4. Step 4: Simplify right side
    720,225.27x = 395,494,733,546.04
  5. Step 5: Solve for x
    x = 395,494,733,546.04/720,225.27
  6. Step 6: Final answer
    x = 549,126.43

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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.