Home / 1,425,428.40-1,967,091.84-780,871.92

Finding the Fourth Proportional to 1,425,428.40, 1,967,091.84 and 780,871.92

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Solution

The fourth proportional to 1,425,428.40, 1,967,091.84 and 780,871.92 is: 1,077,603.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425,428.40 : 1,967,091.84 = 780,871.92 : x
  2. Step 2: Convert to fraction form
    1,425,428.40/1,967,091.84 = 780,871.92/x
  3. Step 3: Cross multiply
    1,425,428.40x = 1,967,091.84 × 780,871.92
  4. Step 4: Simplify right side
    1,425,428.40x = 1,536,046,781,917.13
  5. Step 5: Solve for x
    x = 1,536,046,781,917.13/1,425,428.40
  6. Step 6: Final answer
    x = 1,077,603.60

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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.