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Finding the Fourth Proportional to 575,695.75, 863,117.15 and 275,890.86

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Solution

The fourth proportional to 575,695.75, 863,117.15 and 275,890.86 is: 413,631.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,695.75 : 863,117.15 = 275,890.86 : x
  2. Step 2: Convert to fraction form
    575,695.75/863,117.15 = 275,890.86/x
  3. Step 3: Cross multiply
    575,695.75x = 863,117.15 × 275,890.86
  4. Step 4: Simplify right side
    575,695.75x = 238,126,128,478.66
  5. Step 5: Solve for x
    x = 238,126,128,478.66/575,695.75
  6. Step 6: Final answer
    x = 413,631.90

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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.