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Finding the Fourth Proportional to 478,462.75, 660,374.22 and 274,651.46

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Solution

The fourth proportional to 478,462.75, 660,374.22 and 274,651.46 is: 379,073.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,462.75 : 660,374.22 = 274,651.46 : x
  2. Step 2: Convert to fraction form
    478,462.75/660,374.22 = 274,651.46/x
  3. Step 3: Cross multiply
    478,462.75x = 660,374.22 × 274,651.46
  4. Step 4: Simplify right side
    478,462.75x = 181,372,742,328.92
  5. Step 5: Solve for x
    x = 181,372,742,328.92/478,462.75
  6. Step 6: Final answer
    x = 379,073.91

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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.