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Finding the Fourth Proportional to 478,286.80, 660,035.88 and 263,426.32

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Solution

The fourth proportional to 478,286.80, 660,035.88 and 263,426.32 is: 363,528.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,286.80 : 660,035.88 = 263,426.32 : x
  2. Step 2: Convert to fraction form
    478,286.80/660,035.88 = 263,426.32/x
  3. Step 3: Cross multiply
    478,286.80x = 660,035.88 × 263,426.32
  4. Step 4: Simplify right side
    478,286.80x = 173,870,822,936.36
  5. Step 5: Solve for x
    x = 173,870,822,936.36/478,286.80
  6. Step 6: Final answer
    x = 363,528.37

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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.