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Finding the Fourth Proportional to 839,455, 1,158,414.09 and 457,473.58

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Solution

The fourth proportional to 839,455, 1,158,414.09 and 457,473.58 is: 631,295.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,455 : 1,158,414.09 = 457,473.58 : x
  2. Step 2: Convert to fraction form
    839,455/1,158,414.09 = 457,473.58/x
  3. Step 3: Cross multiply
    839,455x = 1,158,414.09 × 457,473.58
  4. Step 4: Simplify right side
    839,455x = 529,943,840,874.74
  5. Step 5: Solve for x
    x = 529,943,840,874.74/839,455
  6. Step 6: Final answer
    x = 631,295.12

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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.