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Finding the Fourth Proportional to 604,805.92, 906,172.08 and 426,994.72

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Solution

The fourth proportional to 604,805.92, 906,172.08 and 426,994.72 is: 639,760.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,805.92 : 906,172.08 = 426,994.72 : x
  2. Step 2: Convert to fraction form
    604,805.92/906,172.08 = 426,994.72/x
  3. Step 3: Cross multiply
    604,805.92x = 906,172.08 × 426,994.72
  4. Step 4: Simplify right side
    604,805.92x = 386,930,693,571.42
  5. Step 5: Solve for x
    x = 386,930,693,571.42/604,805.92
  6. Step 6: Final answer
    x = 639,760.10

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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.