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Finding the Fourth Proportional to 604,433.40, 905,613.30 and 288,209.40

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Solution

The fourth proportional to 604,433.40, 905,613.30 and 288,209.40 is: 431,819.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,433.40 : 905,613.30 = 288,209.40 : x
  2. Step 2: Convert to fraction form
    604,433.40/905,613.30 = 288,209.40/x
  3. Step 3: Cross multiply
    604,433.40x = 905,613.30 × 288,209.40
  4. Step 4: Simplify right side
    604,433.40x = 261,006,265,825.02
  5. Step 5: Solve for x
    x = 261,006,265,825.02/604,433.40
  6. Step 6: Final answer
    x = 431,819.73

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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.