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Finding the Fourth Proportional to 642,632.08, 886,842 and 352,241.44

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Solution

The fourth proportional to 642,632.08, 886,842 and 352,241.44 is: 486,098.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,632.08 : 886,842 = 352,241.44 : x
  2. Step 2: Convert to fraction form
    642,632.08/886,842 = 352,241.44/x
  3. Step 3: Cross multiply
    642,632.08x = 886,842 × 352,241.44
  4. Step 4: Simplify right side
    642,632.08x = 312,382,503,132.48
  5. Step 5: Solve for x
    x = 312,382,503,132.48/642,632.08
  6. Step 6: Final answer
    x = 486,098.52

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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.