Home / 638,184.46-880,690.14-351,704.78

Finding the Fourth Proportional to 638,184.46, 880,690.14 and 351,704.78

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Solution

The fourth proportional to 638,184.46, 880,690.14 and 351,704.78 is: 485,350.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,184.46 : 880,690.14 = 351,704.78 : x
  2. Step 2: Convert to fraction form
    638,184.46/880,690.14 = 351,704.78/x
  3. Step 3: Cross multiply
    638,184.46x = 880,690.14 × 351,704.78
  4. Step 4: Simplify right side
    638,184.46x = 309,742,931,936.87
  5. Step 5: Solve for x
    x = 309,742,931,936.87/638,184.46
  6. Step 6: Final answer
    x = 485,350.16

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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.