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Finding the Fourth Proportional to 422,649.94, 583,316.72 and 261,556.87

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Solution

The fourth proportional to 422,649.94, 583,316.72 and 261,556.87 is: 360,985.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,649.94 : 583,316.72 = 261,556.87 : x
  2. Step 2: Convert to fraction form
    422,649.94/583,316.72 = 261,556.87/x
  3. Step 3: Cross multiply
    422,649.94x = 583,316.72 × 261,556.87
  4. Step 4: Simplify right side
    422,649.94x = 152,570,491,277.50
  5. Step 5: Solve for x
    x = 152,570,491,277.50/422,649.94
  6. Step 6: Final answer
    x = 360,985.48

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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.