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Finding the Fourth Proportional to 1,358,533.78, 1,874,796.09 and 746,743.18

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Solution

The fourth proportional to 1,358,533.78, 1,874,796.09 and 746,743.18 is: 1,030,516.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358,533.78 : 1,874,796.09 = 746,743.18 : x
  2. Step 2: Convert to fraction form
    1,358,533.78/1,874,796.09 = 746,743.18/x
  3. Step 3: Cross multiply
    1,358,533.78x = 1,874,796.09 × 746,743.18
  4. Step 4: Simplify right side
    1,358,533.78x = 1,399,991,194,098.17
  5. Step 5: Solve for x
    x = 1,399,991,194,098.17/1,358,533.78
  6. Step 6: Final answer
    x = 1,030,516.29

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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.