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Finding the Fourth Proportional to 672,516.96, 928,072.56 and 370,716

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Solution

The fourth proportional to 672,516.96, 928,072.56 and 370,716 is: 511,587.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,516.96 : 928,072.56 = 370,716 : x
  2. Step 2: Convert to fraction form
    672,516.96/928,072.56 = 370,716/x
  3. Step 3: Cross multiply
    672,516.96x = 928,072.56 × 370,716
  4. Step 4: Simplify right side
    672,516.96x = 344,051,347,152.96
  5. Step 5: Solve for x
    x = 344,051,347,152.96/672,516.96
  6. Step 6: Final answer
    x = 511,587.61

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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.