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Finding the Fourth Proportional to 422,649.93, 583,316.64 and 261,556.86

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Solution

The fourth proportional to 422,649.93, 583,316.64 and 261,556.86 is: 360,985.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,649.93 : 583,316.64 = 261,556.86 : x
  2. Step 2: Convert to fraction form
    422,649.93/583,316.64 = 261,556.86/x
  3. Step 3: Cross multiply
    422,649.93x = 583,316.64 × 261,556.86
  4. Step 4: Simplify right side
    422,649.93x = 152,570,468,744.15
  5. Step 5: Solve for x
    x = 152,570,468,744.15/422,649.93
  6. Step 6: Final answer
    x = 360,985.43

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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.