Home / 1,429,107.78-1,969,443.22-1,402,840.20

Finding the Fourth Proportional to 1,429,107.78, 1,969,443.22 and 1,402,840.20

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Solution

The fourth proportional to 1,429,107.78, 1,969,443.22 and 1,402,840.20 is: 1,933,244.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429,107.78 : 1,969,443.22 = 1,402,840.20 : x
  2. Step 2: Convert to fraction form
    1,429,107.78/1,969,443.22 = 1,402,840.20/x
  3. Step 3: Cross multiply
    1,429,107.78x = 1,969,443.22 × 1,402,840.20
  4. Step 4: Simplify right side
    1,429,107.78x = 2,762,814,112,915.09
  5. Step 5: Solve for x
    x = 2,762,814,112,915.09/1,429,107.78
  6. Step 6: Final answer
    x = 1,933,244.05

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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.