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Finding the Fourth Proportional to 604,005.20, 906,007.80 and 289,077.20

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Solution

The fourth proportional to 604,005.20, 906,007.80 and 289,077.20 is: 433,615.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,005.20 : 906,007.80 = 289,077.20 : x
  2. Step 2: Convert to fraction form
    604,005.20/906,007.80 = 289,077.20/x
  3. Step 3: Cross multiply
    604,005.20x = 906,007.80 × 289,077.20
  4. Step 4: Simplify right side
    604,005.20x = 261,906,198,002.16
  5. Step 5: Solve for x
    x = 261,906,198,002.16/604,005.20
  6. Step 6: Final answer
    x = 433,615.80

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Similar ratio
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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.