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Finding the Fourth Proportional to 586,878.57, 809,895.80 and 345,171.33

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Solution

The fourth proportional to 586,878.57, 809,895.80 and 345,171.33 is: 476,338.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,878.57 : 809,895.80 = 345,171.33 : x
  2. Step 2: Convert to fraction form
    586,878.57/809,895.80 = 345,171.33/x
  3. Step 3: Cross multiply
    586,878.57x = 809,895.80 × 345,171.33
  4. Step 4: Simplify right side
    586,878.57x = 279,552,808,721.56
  5. Step 5: Solve for x
    x = 279,552,808,721.56/586,878.57
  6. Step 6: Final answer
    x = 476,338.42

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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.