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Finding the Fourth Proportional to 439,615.40, 659,423.10 and 329,023.40

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Solution

The fourth proportional to 439,615.40, 659,423.10 and 329,023.40 is: 493,535.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,615.40 : 659,423.10 = 329,023.40 : x
  2. Step 2: Convert to fraction form
    439,615.40/659,423.10 = 329,023.40/x
  3. Step 3: Cross multiply
    439,615.40x = 659,423.10 × 329,023.40
  4. Step 4: Simplify right side
    439,615.40x = 216,965,630,400.54
  5. Step 5: Solve for x
    x = 216,965,630,400.54/439,615.40
  6. Step 6: Final answer
    x = 493,535.10

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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.