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Finding the Fourth Proportional to 720,175.21, 993,852.22 and 397,892.72

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Solution

The fourth proportional to 720,175.21, 993,852.22 and 397,892.72 is: 549,097.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,175.21 : 993,852.22 = 397,892.72 : x
  2. Step 2: Convert to fraction form
    720,175.21/993,852.22 = 397,892.72/x
  3. Step 3: Cross multiply
    720,175.21x = 993,852.22 × 397,892.72
  4. Step 4: Simplify right side
    720,175.21x = 395,446,563,093.84
  5. Step 5: Solve for x
    x = 395,446,563,093.84/720,175.21
  6. Step 6: Final answer
    x = 549,097.72

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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.