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Finding the Fourth Proportional to 1,621,743.64, 2,238,361.50 and 943,071.64

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Solution

The fourth proportional to 1,621,743.64, 2,238,361.50 and 943,071.64 is: 1,301,645.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621,743.64 : 2,238,361.50 = 943,071.64 : x
  2. Step 2: Convert to fraction form
    1,621,743.64/2,238,361.50 = 943,071.64/x
  3. Step 3: Cross multiply
    1,621,743.64x = 2,238,361.50 × 943,071.64
  4. Step 4: Simplify right side
    1,621,743.64x = 2,110,935,250,717.86
  5. Step 5: Solve for x
    x = 2,110,935,250,717.86/1,621,743.64
  6. Step 6: Final answer
    x = 1,301,645.46

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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.