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Finding the Fourth Proportional to 478,562.39, 660,429.99 and 263,716.32

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Solution

The fourth proportional to 478,562.39, 660,429.99 and 263,716.32 is: 363,936.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,562.39 : 660,429.99 = 263,716.32 : x
  2. Step 2: Convert to fraction form
    478,562.39/660,429.99 = 263,716.32/x
  3. Step 3: Cross multiply
    478,562.39x = 660,429.99 × 263,716.32
  4. Step 4: Simplify right side
    478,562.39x = 174,166,166,580.44
  5. Step 5: Solve for x
    x = 174,166,166,580.44/478,562.39
  6. Step 6: Final answer
    x = 363,936.18

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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.