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Finding the Fourth Proportional to 872,661.60, 1,307,955.60 and 367,221.60

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Solution

The fourth proportional to 872,661.60, 1,307,955.60 and 367,221.60 is: 550,396.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,661.60 : 1,307,955.60 = 367,221.60 : x
  2. Step 2: Convert to fraction form
    872,661.60/1,307,955.60 = 367,221.60/x
  3. Step 3: Cross multiply
    872,661.60x = 1,307,955.60 × 367,221.60
  4. Step 4: Simplify right side
    872,661.60x = 480,309,548,160.96
  5. Step 5: Solve for x
    x = 480,309,548,160.96/872,661.60
  6. Step 6: Final answer
    x = 550,396.11

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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.