Home / 1,029,036.54-1,420,121.07-621,131.88

Finding the Fourth Proportional to 1,029,036.54, 1,420,121.07 and 621,131.88

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Solution

The fourth proportional to 1,029,036.54, 1,420,121.07 and 621,131.88 is: 857,192.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,029,036.54 : 1,420,121.07 = 621,131.88 : x
  2. Step 2: Convert to fraction form
    1,029,036.54/1,420,121.07 = 621,131.88/x
  3. Step 3: Cross multiply
    1,029,036.54x = 1,420,121.07 × 621,131.88
  4. Step 4: Simplify right side
    1,029,036.54x = 882,082,470,036.71
  5. Step 5: Solve for x
    x = 882,082,470,036.71/1,029,036.54
  6. Step 6: Final answer
    x = 857,192.56

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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.