Home / 1,428,419.50-2,143,230.09-889,126.72

Finding the Fourth Proportional to 1,428,419.50, 2,143,230.09 and 889,126.72

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Solution

The fourth proportional to 1,428,419.50, 2,143,230.09 and 889,126.72 is: 1,334,064.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,419.50 : 2,143,230.09 = 889,126.72 : x
  2. Step 2: Convert to fraction form
    1,428,419.50/2,143,230.09 = 889,126.72/x
  3. Step 3: Cross multiply
    1,428,419.50x = 2,143,230.09 × 889,126.72
  4. Step 4: Simplify right side
    1,428,419.50x = 1,905,603,140,127.00
  5. Step 5: Solve for x
    x = 1,905,603,140,127.00/1,428,419.50
  6. Step 6: Final answer
    x = 1,334,064.08

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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.