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Finding the Fourth Proportional to 478,639.42, 660,526.92 and 263,787.32

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Solution

The fourth proportional to 478,639.42, 660,526.92 and 263,787.32 is: 364,029.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,639.42 : 660,526.92 = 263,787.32 : x
  2. Step 2: Convert to fraction form
    478,639.42/660,526.92 = 263,787.32/x
  3. Step 3: Cross multiply
    478,639.42x = 660,526.92 × 263,787.32
  4. Step 4: Simplify right side
    478,639.42x = 174,238,627,665.97
  5. Step 5: Solve for x
    x = 174,238,627,665.97/478,639.42
  6. Step 6: Final answer
    x = 364,029.00

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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.