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Finding the Fourth Proportional to 613,884.34, 919,601.79 and 487,738.18

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Solution

The fourth proportional to 613,884.34, 919,601.79 and 487,738.18 is: 730,634.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,884.34 : 919,601.79 = 487,738.18 : x
  2. Step 2: Convert to fraction form
    613,884.34/919,601.79 = 487,738.18/x
  3. Step 3: Cross multiply
    613,884.34x = 919,601.79 × 487,738.18
  4. Step 4: Simplify right side
    613,884.34x = 448,524,903,379.34
  5. Step 5: Solve for x
    x = 448,524,903,379.34/613,884.34
  6. Step 6: Final answer
    x = 730,634.22

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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.