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Finding the Fourth Proportional to 638,270.24, 880,808.52 and 351,790.48

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Solution

The fourth proportional to 638,270.24, 880,808.52 and 351,790.48 is: 485,468.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,270.24 : 880,808.52 = 351,790.48 : x
  2. Step 2: Convert to fraction form
    638,270.24/880,808.52 = 351,790.48/x
  3. Step 3: Cross multiply
    638,270.24x = 880,808.52 × 351,790.48
  4. Step 4: Simplify right side
    638,270.24x = 309,860,052,038.89
  5. Step 5: Solve for x
    x = 309,860,052,038.89/638,270.24
  6. Step 6: Final answer
    x = 485,468.43

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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.