Home / 1,428,420-2,143,230.84-889,127.22

Finding the Fourth Proportional to 1,428,420, 2,143,230.84 and 889,127.22

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Solution

The fourth proportional to 1,428,420, 2,143,230.84 and 889,127.22 is: 1,334,064.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,420 : 2,143,230.84 = 889,127.22 : x
  2. Step 2: Convert to fraction form
    1,428,420/2,143,230.84 = 889,127.22/x
  3. Step 3: Cross multiply
    1,428,420x = 2,143,230.84 × 889,127.22
  4. Step 4: Simplify right side
    1,428,420x = 1,905,604,878,587.46
  5. Step 5: Solve for x
    x = 1,905,604,878,587.46/1,428,420
  6. Step 6: Final answer
    x = 1,334,064.83

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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.