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Finding the Fourth Proportional to 1,137,636.52, 1,569,946.52 and 628,338.89

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Solution

The fourth proportional to 1,137,636.52, 1,569,946.52 and 628,338.89 is: 867,112.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,137,636.52 : 1,569,946.52 = 628,338.89 : x
  2. Step 2: Convert to fraction form
    1,137,636.52/1,569,946.52 = 628,338.89/x
  3. Step 3: Cross multiply
    1,137,636.52x = 1,569,946.52 × 628,338.89
  4. Step 4: Simplify right side
    1,137,636.52x = 986,458,459,231.88
  5. Step 5: Solve for x
    x = 986,458,459,231.88/1,137,636.52
  6. Step 6: Final answer
    x = 867,112.16

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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.