Home / 638,378.87-880,962.66-351,903.74

Finding the Fourth Proportional to 638,378.87, 880,962.66 and 351,903.74

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Solution

The fourth proportional to 638,378.87, 880,962.66 and 351,903.74 is: 485,627.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,378.87 : 880,962.66 = 351,903.74 : x
  2. Step 2: Convert to fraction form
    638,378.87/880,962.66 = 351,903.74/x
  3. Step 3: Cross multiply
    638,378.87x = 880,962.66 × 351,903.74
  4. Step 4: Simplify right side
    638,378.87x = 310,014,050,892.42
  5. Step 5: Solve for x
    x = 310,014,050,892.42/638,378.87
  6. Step 6: Final answer
    x = 485,627.06

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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.