Home / 641,579.40-885,600.89-369,755.81

Finding the Fourth Proportional to 641,579.40, 885,600.89 and 369,755.81

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Solution

The fourth proportional to 641,579.40, 885,600.89 and 369,755.81 is: 510,390.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,579.40 : 885,600.89 = 369,755.81 : x
  2. Step 2: Convert to fraction form
    641,579.40/885,600.89 = 369,755.81/x
  3. Step 3: Cross multiply
    641,579.40x = 885,600.89 × 369,755.81
  4. Step 4: Simplify right side
    641,579.40x = 327,456,074,418.67
  5. Step 5: Solve for x
    x = 327,456,074,418.67/641,579.40
  6. Step 6: Final answer
    x = 510,390.57

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1.5x scale

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.