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Finding the Fourth Proportional to 613,272.40, 919,908.60 and 347,551.90

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Solution

The fourth proportional to 613,272.40, 919,908.60 and 347,551.90 is: 521,327.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,272.40 : 919,908.60 = 347,551.90 : x
  2. Step 2: Convert to fraction form
    613,272.40/919,908.60 = 347,551.90/x
  3. Step 3: Cross multiply
    613,272.40x = 919,908.60 × 347,551.90
  4. Step 4: Simplify right side
    613,272.40x = 319,715,981,756.34
  5. Step 5: Solve for x
    x = 319,715,981,756.34/613,272.40
  6. Step 6: Final answer
    x = 521,327.85

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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.