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Finding the Fourth Proportional to 579,539.82, 868,113.09 and 429,949.02

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Solution

The fourth proportional to 579,539.82, 868,113.09 and 429,949.02 is: 644,035.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,539.82 : 868,113.09 = 429,949.02 : x
  2. Step 2: Convert to fraction form
    579,539.82/868,113.09 = 429,949.02/x
  3. Step 3: Cross multiply
    579,539.82x = 868,113.09 × 429,949.02
  4. Step 4: Simplify right side
    579,539.82x = 373,244,372,294.67
  5. Step 5: Solve for x
    x = 373,244,372,294.67/579,539.82
  6. Step 6: Final answer
    x = 644,035.77

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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.