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Finding the Fourth Proportional to 1,091,040, 1,636,618.32 and 343,144.32

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Solution

The fourth proportional to 1,091,040, 1,636,618.32 and 343,144.32 is: 514,734.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091,040 : 1,636,618.32 = 343,144.32 : x
  2. Step 2: Convert to fraction form
    1,091,040/1,636,618.32 = 343,144.32/x
  3. Step 3: Cross multiply
    1,091,040x = 1,636,618.32 × 343,144.32
  4. Step 4: Simplify right side
    1,091,040x = 561,596,280,515.94
  5. Step 5: Solve for x
    x = 561,596,280,515.94/1,091,040
  6. Step 6: Final answer
    x = 514,734.82

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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.