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Finding the Fourth Proportional to 610,799.39, 842,903.87 and 356,199.78

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Solution

The fourth proportional to 610,799.39, 842,903.87 and 356,199.78 is: 491,556.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,799.39 : 842,903.87 = 356,199.78 : x
  2. Step 2: Convert to fraction form
    610,799.39/842,903.87 = 356,199.78/x
  3. Step 3: Cross multiply
    610,799.39x = 842,903.87 × 356,199.78
  4. Step 4: Simplify right side
    610,799.39x = 300,242,173,055.15
  5. Step 5: Solve for x
    x = 300,242,173,055.15/610,799.39
  6. Step 6: Final answer
    x = 491,556.11

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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.