Home / 1,422,719.21-1,963,233.28-802,490.11

Finding the Fourth Proportional to 1,422,719.21, 1,963,233.28 and 802,490.11

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Solution

The fourth proportional to 1,422,719.21, 1,963,233.28 and 802,490.11 is: 1,107,369.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422,719.21 : 1,963,233.28 = 802,490.11 : x
  2. Step 2: Convert to fraction form
    1,422,719.21/1,963,233.28 = 802,490.11/x
  3. Step 3: Cross multiply
    1,422,719.21x = 1,963,233.28 × 802,490.11
  4. Step 4: Simplify right side
    1,422,719.21x = 1,575,475,283,908.55
  5. Step 5: Solve for x
    x = 1,575,475,283,908.55/1,422,719.21
  6. Step 6: Final answer
    x = 1,107,369.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.