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Finding the Fourth Proportional to 613,080.85, 919,626.40 and 213,720.98

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Solution

The fourth proportional to 613,080.85, 919,626.40 and 213,720.98 is: 320,583.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,080.85 : 919,626.40 = 213,720.98 : x
  2. Step 2: Convert to fraction form
    613,080.85/919,626.40 = 213,720.98/x
  3. Step 3: Cross multiply
    613,080.85x = 919,626.40 × 213,720.98
  4. Step 4: Simplify right side
    613,080.85x = 196,543,455,081.61
  5. Step 5: Solve for x
    x = 196,543,455,081.61/613,080.85
  6. Step 6: Final answer
    x = 320,583.26

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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.