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Finding the Fourth Proportional to 424,998.18, 638,382.60 and 358,568.46

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Solution

The fourth proportional to 424,998.18, 638,382.60 and 358,568.46 is: 538,599.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,998.18 : 638,382.60 = 358,568.46 : x
  2. Step 2: Convert to fraction form
    424,998.18/638,382.60 = 358,568.46/x
  3. Step 3: Cross multiply
    424,998.18x = 638,382.60 × 358,568.46
  4. Step 4: Simplify right side
    424,998.18x = 228,903,865,772.80
  5. Step 5: Solve for x
    x = 228,903,865,772.80/424,998.18
  6. Step 6: Final answer
    x = 538,599.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.