Home / 1,270,835.80-1,905,735.30-428,954.20

Finding the Fourth Proportional to 1,270,835.80, 1,905,735.30 and 428,954.20

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Solution

The fourth proportional to 1,270,835.80, 1,905,735.30 and 428,954.20 is: 643,256.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270,835.80 : 1,905,735.30 = 428,954.20 : x
  2. Step 2: Convert to fraction form
    1,270,835.80/1,905,735.30 = 428,954.20/x
  3. Step 3: Cross multiply
    1,270,835.80x = 1,905,735.30 × 428,954.20
  4. Step 4: Simplify right side
    1,270,835.80x = 817,473,161,023.26
  5. Step 5: Solve for x
    x = 817,473,161,023.26/1,270,835.80
  6. Step 6: Final answer
    x = 643,256.32

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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.