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Finding the Fourth Proportional to 646,458.76, 969,089.46 and 330,218.20

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Solution

The fourth proportional to 646,458.76, 969,089.46 and 330,218.20 is: 495,021.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,458.76 : 969,089.46 = 330,218.20 : x
  2. Step 2: Convert to fraction form
    646,458.76/969,089.46 = 330,218.20/x
  3. Step 3: Cross multiply
    646,458.76x = 969,089.46 × 330,218.20
  4. Step 4: Simplify right side
    646,458.76x = 320,010,977,120.17
  5. Step 5: Solve for x
    x = 320,010,977,120.17/646,458.76
  6. Step 6: Final answer
    x = 495,021.49

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.