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Finding the Fourth Proportional to 720,249.04, 993,951.30 and 397,951.12

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Solution

The fourth proportional to 720,249.04, 993,951.30 and 397,951.12 is: 549,176.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,249.04 : 993,951.30 = 397,951.12 : x
  2. Step 2: Convert to fraction form
    720,249.04/993,951.30 = 397,951.12/x
  3. Step 3: Cross multiply
    720,249.04x = 993,951.30 × 397,951.12
  4. Step 4: Simplify right side
    720,249.04x = 395,544,033,060.46
  5. Step 5: Solve for x
    x = 395,544,033,060.46/720,249.04
  6. Step 6: Final answer
    x = 549,176.76

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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.