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Finding the Fourth Proportional to 656,806.02, 906,392.04 and 355,000.02

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Solution

The fourth proportional to 656,806.02, 906,392.04 and 355,000.02 is: 489,899.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,806.02 : 906,392.04 = 355,000.02 : x
  2. Step 2: Convert to fraction form
    656,806.02/906,392.04 = 355,000.02/x
  3. Step 3: Cross multiply
    656,806.02x = 906,392.04 × 355,000.02
  4. Step 4: Simplify right side
    656,806.02x = 321,769,192,327.84
  5. Step 5: Solve for x
    x = 321,769,192,327.84/656,806.02
  6. Step 6: Final answer
    x = 489,899.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.