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Finding the Fourth Proportional to 617,903.70, 926,164.35 and 262,857.30

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Solution

The fourth proportional to 617,903.70, 926,164.35 and 262,857.30 is: 393,991.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,903.70 : 926,164.35 = 262,857.30 : x
  2. Step 2: Convert to fraction form
    617,903.70/926,164.35 = 262,857.30/x
  3. Step 3: Cross multiply
    617,903.70x = 926,164.35 × 262,857.30
  4. Step 4: Simplify right side
    617,903.70x = 243,449,060,397.26
  5. Step 5: Solve for x
    x = 243,449,060,397.26/617,903.70
  6. Step 6: Final answer
    x = 393,991.91

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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.