Home / 638,134.28-880,631.22-351,664.64

Finding the Fourth Proportional to 638,134.28, 880,631.22 and 351,664.64

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Solution

The fourth proportional to 638,134.28, 880,631.22 and 351,664.64 is: 485,300.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,134.28 : 880,631.22 = 351,664.64 : x
  2. Step 2: Convert to fraction form
    638,134.28/880,631.22 = 351,664.64/x
  3. Step 3: Cross multiply
    638,134.28x = 880,631.22 × 351,664.64
  4. Step 4: Simplify right side
    638,134.28x = 309,686,860,954.06
  5. Step 5: Solve for x
    x = 309,686,860,954.06/638,134.28
  6. Step 6: Final answer
    x = 485,300.46

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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.