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Finding the Fourth Proportional to 934,652.88, 1,289,889 and 521,217.72

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Solution

The fourth proportional to 934,652.88, 1,289,889 and 521,217.72 is: 719,318.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    934,652.88 : 1,289,889 = 521,217.72 : x
  2. Step 2: Convert to fraction form
    934,652.88/1,289,889 = 521,217.72/x
  3. Step 3: Cross multiply
    934,652.88x = 1,289,889 × 521,217.72
  4. Step 4: Simplify right side
    934,652.88x = 672,313,003,633.08
  5. Step 5: Solve for x
    x = 672,313,003,633.08/934,652.88
  6. Step 6: Final answer
    x = 719,318.39

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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.