Home / 638,220.84-880,727.46-351,740.84

Finding the Fourth Proportional to 638,220.84, 880,727.46 and 351,740.84

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Solution

The fourth proportional to 638,220.84, 880,727.46 and 351,740.84 is: 485,392.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,220.84 : 880,727.46 = 351,740.84 : x
  2. Step 2: Convert to fraction form
    638,220.84/880,727.46 = 351,740.84/x
  3. Step 3: Cross multiply
    638,220.84x = 880,727.46 × 351,740.84
  4. Step 4: Simplify right side
    638,220.84x = 309,787,816,591.47
  5. Step 5: Solve for x
    x = 309,787,816,591.47/638,220.84
  6. Step 6: Final answer
    x = 485,392.83

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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.