Home / 627,004.34-865,319.35-355,120.60

Finding the Fourth Proportional to 627,004.34, 865,319.35 and 355,120.60

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Solution

The fourth proportional to 627,004.34, 865,319.35 and 355,120.60 is: 490,096.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,004.34 : 865,319.35 = 355,120.60 : x
  2. Step 2: Convert to fraction form
    627,004.34/865,319.35 = 355,120.60/x
  3. Step 3: Cross multiply
    627,004.34x = 865,319.35 × 355,120.60
  4. Step 4: Simplify right side
    627,004.34x = 307,292,726,000.84
  5. Step 5: Solve for x
    x = 307,292,726,000.84/627,004.34
  6. Step 6: Final answer
    x = 490,096.65

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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.