Home / 644,723.70-889,722.98-403,147.68

Finding the Fourth Proportional to 644,723.70, 889,722.98 and 403,147.68

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Solution

The fourth proportional to 644,723.70, 889,722.98 and 403,147.68 is: 556,346.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,723.70 : 889,722.98 = 403,147.68 : x
  2. Step 2: Convert to fraction form
    644,723.70/889,722.98 = 403,147.68/x
  3. Step 3: Cross multiply
    644,723.70x = 889,722.98 × 403,147.68
  4. Step 4: Simplify right side
    644,723.70x = 358,689,755,229.69
  5. Step 5: Solve for x
    x = 358,689,755,229.69/644,723.70
  6. Step 6: Final answer
    x = 556,346.47

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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.