Home / 1,421,310.40-2,128,466.40-945,419.20

Finding the Fourth Proportional to 1,421,310.40, 2,128,466.40 and 945,419.20

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Solution

The fourth proportional to 1,421,310.40, 2,128,466.40 and 945,419.20 is: 1,415,801.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,310.40 : 2,128,466.40 = 945,419.20 : x
  2. Step 2: Convert to fraction form
    1,421,310.40/2,128,466.40 = 945,419.20/x
  3. Step 3: Cross multiply
    1,421,310.40x = 2,128,466.40 × 945,419.20
  4. Step 4: Simplify right side
    1,421,310.40x = 2,012,293,001,114.88
  5. Step 5: Solve for x
    x = 2,012,293,001,114.88/1,421,310.40
  6. Step 6: Final answer
    x = 1,415,801.22

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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.