Home / 738,354.40-1,018,929.11-398,822.65

Finding the Fourth Proportional to 738,354.40, 1,018,929.11 and 398,822.65

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Solution

The fourth proportional to 738,354.40, 1,018,929.11 and 398,822.65 is: 550,375.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,354.40 : 1,018,929.11 = 398,822.65 : x
  2. Step 2: Convert to fraction form
    738,354.40/1,018,929.11 = 398,822.65/x
  3. Step 3: Cross multiply
    738,354.40x = 1,018,929.11 × 398,822.65
  4. Step 4: Simplify right side
    738,354.40x = 406,372,003,270.91
  5. Step 5: Solve for x
    x = 406,372,003,270.91/738,354.40
  6. Step 6: Final answer
    x = 550,375.27

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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.