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Finding the Fourth Proportional to 478,694.91, 660,603 and 263,835.53

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Solution

The fourth proportional to 478,694.91, 660,603 and 263,835.53 is: 364,095.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,694.91 : 660,603 = 263,835.53 : x
  2. Step 2: Convert to fraction form
    478,694.91/660,603 = 263,835.53/x
  3. Step 3: Cross multiply
    478,694.91x = 660,603 × 263,835.53
  4. Step 4: Simplify right side
    478,694.91x = 174,290,542,624.59
  5. Step 5: Solve for x
    x = 174,290,542,624.59/478,694.91
  6. Step 6: Final answer
    x = 364,095.25

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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.