Home / 738,368.76-1,018,949.28-398,837

Finding the Fourth Proportional to 738,368.76, 1,018,949.28 and 398,837

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Solution

The fourth proportional to 738,368.76, 1,018,949.28 and 398,837 is: 550,395.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,368.76 : 1,018,949.28 = 398,837 : x
  2. Step 2: Convert to fraction form
    738,368.76/1,018,949.28 = 398,837/x
  3. Step 3: Cross multiply
    738,368.76x = 1,018,949.28 × 398,837
  4. Step 4: Simplify right side
    738,368.76x = 406,394,673,987.36
  5. Step 5: Solve for x
    x = 406,394,673,987.36/738,368.76
  6. Step 6: Final answer
    x = 550,395.27

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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.