Home / 1,420,672.40-2,131,008.60-889,830.80

Finding the Fourth Proportional to 1,420,672.40, 2,131,008.60 and 889,830.80

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Solution

The fourth proportional to 1,420,672.40, 2,131,008.60 and 889,830.80 is: 1,334,746.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,672.40 : 2,131,008.60 = 889,830.80 : x
  2. Step 2: Convert to fraction form
    1,420,672.40/2,131,008.60 = 889,830.80/x
  3. Step 3: Cross multiply
    1,420,672.40x = 2,131,008.60 × 889,830.80
  4. Step 4: Simplify right side
    1,420,672.40x = 1,896,237,087,344.88
  5. Step 5: Solve for x
    x = 1,896,237,087,344.88/1,420,672.40
  6. Step 6: Final answer
    x = 1,334,746.20

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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.