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Finding the Fourth Proportional to 478,639.86, 660,527.37 and 263,787.72

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Solution

The fourth proportional to 478,639.86, 660,527.37 and 263,787.72 is: 364,029.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,639.86 : 660,527.37 = 263,787.72 : x
  2. Step 2: Convert to fraction form
    478,639.86/660,527.37 = 263,787.72/x
  3. Step 3: Cross multiply
    478,639.86x = 660,527.37 × 263,787.72
  4. Step 4: Simplify right side
    478,639.86x = 174,239,008,929.90
  5. Step 5: Solve for x
    x = 174,239,008,929.90/478,639.86
  6. Step 6: Final answer
    x = 364,029.46

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1.5x scale

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.