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Finding the Fourth Proportional to 707,163.78, 975,909.96 and 384,885.57

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Solution

The fourth proportional to 707,163.78, 975,909.96 and 384,885.57 is: 531,155.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,163.78 : 975,909.96 = 384,885.57 : x
  2. Step 2: Convert to fraction form
    707,163.78/975,909.96 = 384,885.57/x
  3. Step 3: Cross multiply
    707,163.78x = 975,909.96 × 384,885.57
  4. Step 4: Simplify right side
    707,163.78x = 375,613,661,223.28
  5. Step 5: Solve for x
    x = 375,613,661,223.28/707,163.78
  6. Step 6: Final answer
    x = 531,155.12

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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.