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Finding the Fourth Proportional to 1,397,090, 2,095,654.44 and 399,818

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Solution

The fourth proportional to 1,397,090, 2,095,654.44 and 399,818 is: 599,732.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,397,090 : 2,095,654.44 = 399,818 : x
  2. Step 2: Convert to fraction form
    1,397,090/2,095,654.44 = 399,818/x
  3. Step 3: Cross multiply
    1,397,090x = 2,095,654.44 × 399,818
  4. Step 4: Simplify right side
    1,397,090x = 837,880,366,891.92
  5. Step 5: Solve for x
    x = 837,880,366,891.92/1,397,090
  6. Step 6: Final answer
    x = 599,732.56

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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.