Home / 869,619.40-1,304,429.10-720,028.60

Finding the Fourth Proportional to 869,619.40, 1,304,429.10 and 720,028.60

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Solution

The fourth proportional to 869,619.40, 1,304,429.10 and 720,028.60 is: 1,080,042.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,619.40 : 1,304,429.10 = 720,028.60 : x
  2. Step 2: Convert to fraction form
    869,619.40/1,304,429.10 = 720,028.60/x
  3. Step 3: Cross multiply
    869,619.40x = 1,304,429.10 × 720,028.60
  4. Step 4: Simplify right side
    869,619.40x = 939,226,258,672.26
  5. Step 5: Solve for x
    x = 939,226,258,672.26/869,619.40
  6. Step 6: Final answer
    x = 1,080,042.90

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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.