Home / 889,819.40-1,334,729.10-721,857.80

Finding the Fourth Proportional to 889,819.40, 1,334,729.10 and 721,857.80

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Solution

The fourth proportional to 889,819.40, 1,334,729.10 and 721,857.80 is: 1,082,786.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,819.40 : 1,334,729.10 = 721,857.80 : x
  2. Step 2: Convert to fraction form
    889,819.40/1,334,729.10 = 721,857.80/x
  3. Step 3: Cross multiply
    889,819.40x = 1,334,729.10 × 721,857.80
  4. Step 4: Simplify right side
    889,819.40x = 963,484,611,721.98
  5. Step 5: Solve for x
    x = 963,484,611,721.98/889,819.40
  6. Step 6: Final answer
    x = 1,082,786.70

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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.