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Finding the Fourth Proportional to 478,627.70, 660,504.69 and 263,767.70

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Solution

The fourth proportional to 478,627.70, 660,504.69 and 263,767.70 is: 363,998.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,627.70 : 660,504.69 = 263,767.70 : x
  2. Step 2: Convert to fraction form
    478,627.70/660,504.69 = 263,767.70/x
  3. Step 3: Cross multiply
    478,627.70x = 660,504.69 × 263,767.70
  4. Step 4: Simplify right side
    478,627.70x = 174,219,802,920.51
  5. Step 5: Solve for x
    x = 174,219,802,920.51/478,627.70
  6. Step 6: Final answer
    x = 363,998.58

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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.