Home / 738,379.72-1,018,964.46-398,848.12

Finding the Fourth Proportional to 738,379.72, 1,018,964.46 and 398,848.12

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Solution

The fourth proportional to 738,379.72, 1,018,964.46 and 398,848.12 is: 550,410.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,379.72 : 1,018,964.46 = 398,848.12 : x
  2. Step 2: Convert to fraction form
    738,379.72/1,018,964.46 = 398,848.12/x
  3. Step 3: Cross multiply
    738,379.72x = 1,018,964.46 × 398,848.12
  4. Step 4: Simplify right side
    738,379.72x = 406,412,059,217.82
  5. Step 5: Solve for x
    x = 406,412,059,217.82/738,379.72
  6. Step 6: Final answer
    x = 550,410.65

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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.