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Finding the Fourth Proportional to 638,300.10, 956,636.10 and 338,924.10

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Solution

The fourth proportional to 638,300.10, 956,636.10 and 338,924.10 is: 507,953.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,300.10 : 956,636.10 = 338,924.10 : x
  2. Step 2: Convert to fraction form
    638,300.10/956,636.10 = 338,924.10/x
  3. Step 3: Cross multiply
    638,300.10x = 956,636.10 × 338,924.10
  4. Step 4: Simplify right side
    638,300.10x = 324,227,029,220.01
  5. Step 5: Solve for x
    x = 324,227,029,220.01/638,300.10
  6. Step 6: Final answer
    x = 507,953.91

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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.