Home / 1,438,232.40-2,158,126.20-639,637.20

Finding the Fourth Proportional to 1,438,232.40, 2,158,126.20 and 639,637.20

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Solution

The fourth proportional to 1,438,232.40, 2,158,126.20 and 639,637.20 is: 959,801.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,232.40 : 2,158,126.20 = 639,637.20 : x
  2. Step 2: Convert to fraction form
    1,438,232.40/2,158,126.20 = 639,637.20/x
  3. Step 3: Cross multiply
    1,438,232.40x = 2,158,126.20 × 639,637.20
  4. Step 4: Simplify right side
    1,438,232.40x = 1,380,417,799,814.64
  5. Step 5: Solve for x
    x = 1,380,417,799,814.64/1,438,232.40
  6. Step 6: Final answer
    x = 959,801.63

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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.