Home / 644,919.17-889,982.03-358,433.10

Finding the Fourth Proportional to 644,919.17, 889,982.03 and 358,433.10

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Solution

The fourth proportional to 644,919.17, 889,982.03 and 358,433.10 is: 494,634.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,919.17 : 889,982.03 = 358,433.10 : x
  2. Step 2: Convert to fraction form
    644,919.17/889,982.03 = 358,433.10/x
  3. Step 3: Cross multiply
    644,919.17x = 889,982.03 × 358,433.10
  4. Step 4: Simplify right side
    644,919.17x = 318,999,018,853.28
  5. Step 5: Solve for x
    x = 318,999,018,853.28/644,919.17
  6. Step 6: Final answer
    x = 494,634.11

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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.