Home / 638,377.04-880,963.20-351,890.96

Finding the Fourth Proportional to 638,377.04, 880,963.20 and 351,890.96

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Solution

The fourth proportional to 638,377.04, 880,963.20 and 351,890.96 is: 485,611.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,377.04 : 880,963.20 = 351,890.96 : x
  2. Step 2: Convert to fraction form
    638,377.04/880,963.20 = 351,890.96/x
  3. Step 3: Cross multiply
    638,377.04x = 880,963.20 × 351,890.96
  4. Step 4: Simplify right side
    638,377.04x = 310,002,986,172.67
  5. Step 5: Solve for x
    x = 310,002,986,172.67/638,377.04
  6. Step 6: Final answer
    x = 485,611.11

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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.