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Finding the Fourth Proportional to 572,018.21, 789,382.97 and 313,899.50

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Solution

The fourth proportional to 572,018.21, 789,382.97 and 313,899.50 is: 433,180.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,018.21 : 789,382.97 = 313,899.50 : x
  2. Step 2: Convert to fraction form
    572,018.21/789,382.97 = 313,899.50/x
  3. Step 3: Cross multiply
    572,018.21x = 789,382.97 × 313,899.50
  4. Step 4: Simplify right side
    572,018.21x = 247,786,919,591.52
  5. Step 5: Solve for x
    x = 247,786,919,591.52/572,018.21
  6. Step 6: Final answer
    x = 433,180.12

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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.