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Finding the Fourth Proportional to 554,556.17, 765,322.96 and 312,750.52

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Solution

The fourth proportional to 554,556.17, 765,322.96 and 312,750.52 is: 431,615.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,556.17 : 765,322.96 = 312,750.52 : x
  2. Step 2: Convert to fraction form
    554,556.17/765,322.96 = 312,750.52/x
  3. Step 3: Cross multiply
    554,556.17x = 765,322.96 × 312,750.52
  4. Step 4: Simplify right side
    554,556.17x = 239,355,150,719.55
  5. Step 5: Solve for x
    x = 239,355,150,719.55/554,556.17
  6. Step 6: Final answer
    x = 431,615.70

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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.