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Finding the Fourth Proportional to 322,406.60, 483,609.90 and 289,747.40

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Solution

The fourth proportional to 322,406.60, 483,609.90 and 289,747.40 is: 434,621.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,406.60 : 483,609.90 = 289,747.40 : x
  2. Step 2: Convert to fraction form
    322,406.60/483,609.90 = 289,747.40/x
  3. Step 3: Cross multiply
    322,406.60x = 483,609.90 × 289,747.40
  4. Step 4: Simplify right side
    322,406.60x = 140,124,711,139.26
  5. Step 5: Solve for x
    x = 140,124,711,139.26/322,406.60
  6. Step 6: Final answer
    x = 434,621.10

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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.