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Finding the Fourth Proportional to 478,556.34, 660,437.16 and 263,696.34

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Solution

The fourth proportional to 478,556.34, 660,437.16 and 263,696.34 is: 363,917.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,556.34 : 660,437.16 = 263,696.34 : x
  2. Step 2: Convert to fraction form
    478,556.34/660,437.16 = 263,696.34/x
  3. Step 3: Cross multiply
    478,556.34x = 660,437.16 × 263,696.34
  4. Step 4: Simplify right side
    478,556.34x = 174,154,861,891.99
  5. Step 5: Solve for x
    x = 174,154,861,891.99/478,556.34
  6. Step 6: Final answer
    x = 363,917.16

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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.