Home / 638,183.96-880,689.45-351,704.28

Finding the Fourth Proportional to 638,183.96, 880,689.45 and 351,704.28

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Solution

The fourth proportional to 638,183.96, 880,689.45 and 351,704.28 is: 485,349.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,183.96 : 880,689.45 = 351,704.28 : x
  2. Step 2: Convert to fraction form
    638,183.96/880,689.45 = 351,704.28/x
  3. Step 3: Cross multiply
    638,183.96x = 880,689.45 × 351,704.28
  4. Step 4: Simplify right side
    638,183.96x = 309,742,248,915.85
  5. Step 5: Solve for x
    x = 309,742,248,915.85/638,183.96
  6. Step 6: Final answer
    x = 485,349.47

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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.