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Finding the Fourth Proportional to 628,842.69, 867,801.60 and 342,360.27

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Solution

The fourth proportional to 628,842.69, 867,801.60 and 342,360.27 is: 472,456.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,842.69 : 867,801.60 = 342,360.27 : x
  2. Step 2: Convert to fraction form
    628,842.69/867,801.60 = 342,360.27/x
  3. Step 3: Cross multiply
    628,842.69x = 867,801.60 × 342,360.27
  4. Step 4: Simplify right side
    628,842.69x = 297,100,790,082.43
  5. Step 5: Solve for x
    x = 297,100,790,082.43/628,842.69
  6. Step 6: Final answer
    x = 472,456.46

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1.5x scale

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.