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Finding the Fourth Proportional to 1,316,845.72, 1,817,394.65 and 743,922.82

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Solution

The fourth proportional to 1,316,845.72, 1,817,394.65 and 743,922.82 is: 1,026,696.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316,845.72 : 1,817,394.65 = 743,922.82 : x
  2. Step 2: Convert to fraction form
    1,316,845.72/1,817,394.65 = 743,922.82/x
  3. Step 3: Cross multiply
    1,316,845.72x = 1,817,394.65 × 743,922.82
  4. Step 4: Simplify right side
    1,316,845.72x = 1,352,001,353,080.91
  5. Step 5: Solve for x
    x = 1,352,001,353,080.91/1,316,845.72
  6. Step 6: Final answer
    x = 1,026,696.85

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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.