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Finding the Fourth Proportional to 612,428.40, 845,198.46 and 367,422.33

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Solution

The fourth proportional to 612,428.40, 845,198.46 and 367,422.33 is: 507,071.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,428.40 : 845,198.46 = 367,422.33 : x
  2. Step 2: Convert to fraction form
    612,428.40/845,198.46 = 367,422.33/x
  3. Step 3: Cross multiply
    612,428.40x = 845,198.46 × 367,422.33
  4. Step 4: Simplify right side
    612,428.40x = 310,544,787,485.61
  5. Step 5: Solve for x
    x = 310,544,787,485.61/612,428.40
  6. Step 6: Final answer
    x = 507,071.17

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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.