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Finding the Fourth Proportional to 478,639.91, 660,523.08 and 263,779.98

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Solution

The fourth proportional to 478,639.91, 660,523.08 and 263,779.98 is: 364,016.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,639.91 : 660,523.08 = 263,779.98 : x
  2. Step 2: Convert to fraction form
    478,639.91/660,523.08 = 263,779.98/x
  3. Step 3: Cross multiply
    478,639.91x = 660,523.08 × 263,779.98
  4. Step 4: Simplify right side
    478,639.91x = 174,232,764,831.94
  5. Step 5: Solve for x
    x = 174,232,764,831.94/478,639.91
  6. Step 6: Final answer
    x = 364,016.38

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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.