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Finding the Fourth Proportional to 549,571.23, 825,619.84 and 390,043.25

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Solution

The fourth proportional to 549,571.23, 825,619.84 and 390,043.25 is: 585,961.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,571.23 : 825,619.84 = 390,043.25 : x
  2. Step 2: Convert to fraction form
    549,571.23/825,619.84 = 390,043.25/x
  3. Step 3: Cross multiply
    549,571.23x = 825,619.84 × 390,043.25
  4. Step 4: Simplify right side
    549,571.23x = 322,027,443,650.95
  5. Step 5: Solve for x
    x = 322,027,443,650.95/549,571.23
  6. Step 6: Final answer
    x = 585,961.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.