Home / 672,020.42-1,007,680.64-316,939.10

Finding the Fourth Proportional to 672,020.42, 1,007,680.64 and 316,939.10

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Solution

The fourth proportional to 672,020.42, 1,007,680.64 and 316,939.10 is: 475,243.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,020.42 : 1,007,680.64 = 316,939.10 : x
  2. Step 2: Convert to fraction form
    672,020.42/1,007,680.64 = 316,939.10/x
  3. Step 3: Cross multiply
    672,020.42x = 1,007,680.64 × 316,939.10
  4. Step 4: Simplify right side
    672,020.42x = 319,373,388,505.93
  5. Step 5: Solve for x
    x = 319,373,388,505.93/672,020.42
  6. Step 6: Final answer
    x = 475,243.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.