Home / 1,692,139.28-2,335,137.80-928,178.96

Finding the Fourth Proportional to 1,692,139.28, 2,335,137.80 and 928,178.96

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Solution

The fourth proportional to 1,692,139.28, 2,335,137.80 and 928,178.96 is: 1,280,879.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,692,139.28 : 2,335,137.80 = 928,178.96 : x
  2. Step 2: Convert to fraction form
    1,692,139.28/2,335,137.80 = 928,178.96/x
  3. Step 3: Cross multiply
    1,692,139.28x = 2,335,137.80 × 928,178.96
  4. Step 4: Simplify right side
    1,692,139.28x = 2,167,425,774,660.69
  5. Step 5: Solve for x
    x = 2,167,425,774,660.69/1,692,139.28
  6. Step 6: Final answer
    x = 1,280,879.06

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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.