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Finding the Fourth Proportional to 478,556.84, 660,437.85 and 263,696.84

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Solution

The fourth proportional to 478,556.84, 660,437.85 and 263,696.84 is: 363,917.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,556.84 : 660,437.85 = 263,696.84 : x
  2. Step 2: Convert to fraction form
    478,556.84/660,437.85 = 263,696.84/x
  3. Step 3: Cross multiply
    478,556.84x = 660,437.85 × 263,696.84
  4. Step 4: Simplify right side
    478,556.84x = 174,155,374,061.39
  5. Step 5: Solve for x
    x = 174,155,374,061.39/478,556.84
  6. Step 6: Final answer
    x = 363,917.85

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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.