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Finding the Fourth Proportional to 501,579.45, 752,580.23 and 312,198.21

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Solution

The fourth proportional to 501,579.45, 752,580.23 and 312,198.21 is: 468,428.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,579.45 : 752,580.23 = 312,198.21 : x
  2. Step 2: Convert to fraction form
    501,579.45/752,580.23 = 312,198.21/x
  3. Step 3: Cross multiply
    501,579.45x = 752,580.23 × 312,198.21
  4. Step 4: Simplify right side
    501,579.45x = 234,954,199,126.40
  5. Step 5: Solve for x
    x = 234,954,199,126.40/501,579.45
  6. Step 6: Final answer
    x = 468,428.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.