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Finding the Fourth Proportional to 1,346,605, 1,858,353.78 and 743,031.88

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Solution

The fourth proportional to 1,346,605, 1,858,353.78 and 743,031.88 is: 1,025,405.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,346,605 : 1,858,353.78 = 743,031.88 : x
  2. Step 2: Convert to fraction form
    1,346,605/1,858,353.78 = 743,031.88/x
  3. Step 3: Cross multiply
    1,346,605x = 1,858,353.78 × 743,031.88
  4. Step 4: Simplify right side
    1,346,605x = 1,380,816,102,858.51
  5. Step 5: Solve for x
    x = 1,380,816,102,858.51/1,346,605
  6. Step 6: Final answer
    x = 1,025,405.45

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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.