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Finding the Fourth Proportional to 911,025.60, 1,365,386.40 and 349,310.40

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Solution

The fourth proportional to 911,025.60, 1,365,386.40 and 349,310.40 is: 523,523.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,025.60 : 1,365,386.40 = 349,310.40 : x
  2. Step 2: Convert to fraction form
    911,025.60/1,365,386.40 = 349,310.40/x
  3. Step 3: Cross multiply
    911,025.60x = 1,365,386.40 × 349,310.40
  4. Step 4: Simplify right side
    911,025.60x = 476,943,669,538.56
  5. Step 5: Solve for x
    x = 476,943,669,538.56/911,025.60
  6. Step 6: Final answer
    x = 523,523.89

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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.