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Finding the Fourth Proportional to 617,995.43, 926,707.61 and 281,022.47

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Solution

The fourth proportional to 617,995.43, 926,707.61 and 281,022.47 is: 421,403.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,995.43 : 926,707.61 = 281,022.47 : x
  2. Step 2: Convert to fraction form
    617,995.43/926,707.61 = 281,022.47/x
  3. Step 3: Cross multiply
    617,995.43x = 926,707.61 × 281,022.47
  4. Step 4: Simplify right side
    617,995.43x = 260,425,657,599.02
  5. Step 5: Solve for x
    x = 260,425,657,599.02/617,995.43
  6. Step 6: Final answer
    x = 421,403.86

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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.