Home / 1,078,338.80-1,617,508.20-742,415.60

Finding the Fourth Proportional to 1,078,338.80, 1,617,508.20 and 742,415.60

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Solution

The fourth proportional to 1,078,338.80, 1,617,508.20 and 742,415.60 is: 1,113,623.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,338.80 : 1,617,508.20 = 742,415.60 : x
  2. Step 2: Convert to fraction form
    1,078,338.80/1,617,508.20 = 742,415.60/x
  3. Step 3: Cross multiply
    1,078,338.80x = 1,617,508.20 × 742,415.60
  4. Step 4: Simplify right side
    1,078,338.80x = 1,200,863,320,807.92
  5. Step 5: Solve for x
    x = 1,200,863,320,807.92/1,078,338.80
  6. Step 6: Final answer
    x = 1,113,623.40

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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.