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Finding the Fourth Proportional to 518,774.77, 778,402.73 and 219,325.26

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Solution

The fourth proportional to 518,774.77, 778,402.73 and 219,325.26 is: 329,089.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,774.77 : 778,402.73 = 219,325.26 : x
  2. Step 2: Convert to fraction form
    518,774.77/778,402.73 = 219,325.26/x
  3. Step 3: Cross multiply
    518,774.77x = 778,402.73 × 219,325.26
  4. Step 4: Simplify right side
    518,774.77x = 170,723,380,045.33
  5. Step 5: Solve for x
    x = 170,723,380,045.33/518,774.77
  6. Step 6: Final answer
    x = 329,089.60

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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.