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Finding the Fourth Proportional to 646,078.01, 969,120.66 and 575,328.56

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Solution

The fourth proportional to 646,078.01, 969,120.66 and 575,328.56 is: 862,996.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,078.01 : 969,120.66 = 575,328.56 : x
  2. Step 2: Convert to fraction form
    646,078.01/969,120.66 = 575,328.56/x
  3. Step 3: Cross multiply
    646,078.01x = 969,120.66 × 575,328.56
  4. Step 4: Simplify right side
    646,078.01x = 557,562,793,784.05
  5. Step 5: Solve for x
    x = 557,562,793,784.05/646,078.01
  6. Step 6: Final answer
    x = 862,996.09

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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.