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Finding the Fourth Proportional to 431,737.94, 646,765.39 and 262,839.35

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Solution

The fourth proportional to 431,737.94, 646,765.39 and 262,839.35 is: 393,746.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,737.94 : 646,765.39 = 262,839.35 : x
  2. Step 2: Convert to fraction form
    431,737.94/646,765.39 = 262,839.35/x
  3. Step 3: Cross multiply
    431,737.94x = 646,765.39 × 262,839.35
  4. Step 4: Simplify right side
    431,737.94x = 169,995,391,539.03
  5. Step 5: Solve for x
    x = 169,995,391,539.03/431,737.94
  6. Step 6: Final answer
    x = 393,746.70

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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.