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Finding the Fourth Proportional to 670,659.36, 925,494.56 and 368,858.40

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Solution

The fourth proportional to 670,659.36, 925,494.56 and 368,858.40 is: 509,016.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,659.36 : 925,494.56 = 368,858.40 : x
  2. Step 2: Convert to fraction form
    670,659.36/925,494.56 = 368,858.40/x
  3. Step 3: Cross multiply
    670,659.36x = 925,494.56 × 368,858.40
  4. Step 4: Simplify right side
    670,659.36x = 341,376,442,610.30
  5. Step 5: Solve for x
    x = 341,376,442,610.30/670,659.36
  6. Step 6: Final answer
    x = 509,016.15

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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.