Home / 1,425,455.64-1,967,129.58-780,899.16

Finding the Fourth Proportional to 1,425,455.64, 1,967,129.58 and 780,899.16

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Solution

The fourth proportional to 1,425,455.64, 1,967,129.58 and 780,899.16 is: 1,077,641.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425,455.64 : 1,967,129.58 = 780,899.16 : x
  2. Step 2: Convert to fraction form
    1,425,455.64/1,967,129.58 = 780,899.16/x
  3. Step 3: Cross multiply
    1,425,455.64x = 1,967,129.58 × 780,899.16
  4. Step 4: Simplify right side
    1,425,455.64x = 1,536,129,836,633.15
  5. Step 5: Solve for x
    x = 1,536,129,836,633.15/1,425,455.64
  6. Step 6: Final answer
    x = 1,077,641.28

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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.