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Finding the Fourth Proportional to 478,726.17, 660,630.42 and 263,861.52

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Solution

The fourth proportional to 478,726.17, 660,630.42 and 263,861.52 is: 364,122.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,726.17 : 660,630.42 = 263,861.52 : x
  2. Step 2: Convert to fraction form
    478,726.17/660,630.42 = 263,861.52/x
  3. Step 3: Cross multiply
    478,726.17x = 660,630.42 × 263,861.52
  4. Step 4: Simplify right side
    478,726.17x = 174,314,946,779.44
  5. Step 5: Solve for x
    x = 174,314,946,779.44/478,726.17
  6. Step 6: Final answer
    x = 364,122.45

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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.