Home / 1,420,142.60-2,129,557.80-621,012.80

Finding the Fourth Proportional to 1,420,142.60, 2,129,557.80 and 621,012.80

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Solution

The fourth proportional to 1,420,142.60, 2,129,557.80 and 621,012.80 is: 931,232.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,142.60 : 2,129,557.80 = 621,012.80 : x
  2. Step 2: Convert to fraction form
    1,420,142.60/2,129,557.80 = 621,012.80/x
  3. Step 3: Cross multiply
    1,420,142.60x = 2,129,557.80 × 621,012.80
  4. Step 4: Simplify right side
    1,420,142.60x = 1,322,482,652,139.84
  5. Step 5: Solve for x
    x = 1,322,482,652,139.84/1,420,142.60
  6. Step 6: Final answer
    x = 931,232.29

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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.