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Finding the Fourth Proportional to 673,290.22, 929,477.20 and 418,723.42

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Solution

The fourth proportional to 673,290.22, 929,477.20 and 418,723.42 is: 578,047.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,290.22 : 929,477.20 = 418,723.42 : x
  2. Step 2: Convert to fraction form
    673,290.22/929,477.20 = 418,723.42/x
  3. Step 3: Cross multiply
    673,290.22x = 929,477.20 × 418,723.42
  4. Step 4: Simplify right side
    673,290.22x = 389,193,867,348.64
  5. Step 5: Solve for x
    x = 389,193,867,348.64/673,290.22
  6. Step 6: Final answer
    x = 578,047.71

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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.