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Finding the Fourth Proportional to 425,683.41, 638,940.64 and 351,558.69

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Solution

The fourth proportional to 425,683.41, 638,940.64 and 351,558.69 is: 527,681.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,683.41 : 638,940.64 = 351,558.69 : x
  2. Step 2: Convert to fraction form
    425,683.41/638,940.64 = 351,558.69/x
  3. Step 3: Cross multiply
    425,683.41x = 638,940.64 × 351,558.69
  4. Step 4: Simplify right side
    425,683.41x = 224,625,134,386.16
  5. Step 5: Solve for x
    x = 224,625,134,386.16/425,683.41
  6. Step 6: Final answer
    x = 527,681.20

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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.