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Finding the Fourth Proportional to 638,274.27, 880,755.41 and 380,099.87

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Solution

The fourth proportional to 638,274.27, 880,755.41 and 380,099.87 is: 524,500.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,274.27 : 880,755.41 = 380,099.87 : x
  2. Step 2: Convert to fraction form
    638,274.27/880,755.41 = 380,099.87/x
  3. Step 3: Cross multiply
    638,274.27x = 880,755.41 × 380,099.87
  4. Step 4: Simplify right side
    638,274.27x = 334,775,013,389.27
  5. Step 5: Solve for x
    x = 334,775,013,389.27/638,274.27
  6. Step 6: Final answer
    x = 524,500.25

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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.