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Finding the Fourth Proportional to 570,787.92, 856,107.90 and 215,755.74

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Solution

The fourth proportional to 570,787.92, 856,107.90 and 215,755.74 is: 323,605.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,787.92 : 856,107.90 = 215,755.74 : x
  2. Step 2: Convert to fraction form
    570,787.92/856,107.90 = 215,755.74/x
  3. Step 3: Cross multiply
    570,787.92x = 856,107.90 × 215,755.74
  4. Step 4: Simplify right side
    570,787.92x = 184,710,193,484.35
  5. Step 5: Solve for x
    x = 184,710,193,484.35/570,787.92
  6. Step 6: Final answer
    x = 323,605.65

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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.