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Finding the Fourth Proportional to 613,434.11, 919,405.13 and 328,424.27

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Solution

The fourth proportional to 613,434.11, 919,405.13 and 328,424.27 is: 492,236.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,434.11 : 919,405.13 = 328,424.27 : x
  2. Step 2: Convert to fraction form
    613,434.11/919,405.13 = 328,424.27/x
  3. Step 3: Cross multiply
    613,434.11x = 919,405.13 × 328,424.27
  4. Step 4: Simplify right side
    613,434.11x = 301,954,952,415.36
  5. Step 5: Solve for x
    x = 301,954,952,415.36/613,434.11
  6. Step 6: Final answer
    x = 492,236.98

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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.