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Finding the Fourth Proportional to 478,695.65, 660,596.73 and 263,835.86

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Solution

The fourth proportional to 478,695.65, 660,596.73 and 263,835.86 is: 364,091.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,695.65 : 660,596.73 = 263,835.86 : x
  2. Step 2: Convert to fraction form
    478,695.65/660,596.73 = 263,835.86/x
  3. Step 3: Cross multiply
    478,695.65x = 660,596.73 × 263,835.86
  4. Step 4: Simplify right side
    478,695.65x = 174,289,106,372.74
  5. Step 5: Solve for x
    x = 174,289,106,372.74/478,695.65
  6. Step 6: Final answer
    x = 364,091.69

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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.