Home / 1,371,721.20-1,892,954.52-768,130.80

Finding the Fourth Proportional to 1,371,721.20, 1,892,954.52 and 768,130.80

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Solution

The fourth proportional to 1,371,721.20, 1,892,954.52 and 768,130.80 is: 1,060,008.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,371,721.20 : 1,892,954.52 = 768,130.80 : x
  2. Step 2: Convert to fraction form
    1,371,721.20/1,892,954.52 = 768,130.80/x
  3. Step 3: Cross multiply
    1,371,721.20x = 1,892,954.52 × 768,130.80
  4. Step 4: Simplify right side
    1,371,721.20x = 1,454,036,669,811.22
  5. Step 5: Solve for x
    x = 1,454,036,669,811.22/1,371,721.20
  6. Step 6: Final answer
    x = 1,060,008.89

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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.