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Finding the Fourth Proportional to 478,697.46, 660,572.82 and 263,839.32

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Solution

The fourth proportional to 478,697.46, 660,572.82 and 263,839.32 is: 364,081.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,697.46 : 660,572.82 = 263,839.32 : x
  2. Step 2: Convert to fraction form
    478,697.46/660,572.82 = 263,839.32/x
  3. Step 3: Cross multiply
    478,697.46x = 660,572.82 × 263,839.32
  4. Step 4: Simplify right side
    478,697.46x = 174,285,083,639.28
  5. Step 5: Solve for x
    x = 174,285,083,639.28/478,697.46
  6. Step 6: Final answer
    x = 364,081.91

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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.