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Finding the Fourth Proportional to 549,964.80, 823,564.80 and 439,372.80

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Solution

The fourth proportional to 549,964.80, 823,564.80 and 439,372.80 is: 657,954.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,964.80 : 823,564.80 = 439,372.80 : x
  2. Step 2: Convert to fraction form
    549,964.80/823,564.80 = 439,372.80/x
  3. Step 3: Cross multiply
    549,964.80x = 823,564.80 × 439,372.80
  4. Step 4: Simplify right side
    549,964.80x = 361,851,972,157.44
  5. Step 5: Solve for x
    x = 361,851,972,157.44/549,964.80
  6. Step 6: Final answer
    x = 657,954.79

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1.5x scale

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.