Home / 1,686,943.90-2,530,415.85-978,355.90

Finding the Fourth Proportional to 1,686,943.90, 2,530,415.85 and 978,355.90

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Solution

The fourth proportional to 1,686,943.90, 2,530,415.85 and 978,355.90 is: 1,467,533.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686,943.90 : 2,530,415.85 = 978,355.90 : x
  2. Step 2: Convert to fraction form
    1,686,943.90/2,530,415.85 = 978,355.90/x
  3. Step 3: Cross multiply
    1,686,943.90x = 2,530,415.85 × 978,355.90
  4. Step 4: Simplify right side
    1,686,943.90x = 2,475,647,276,301.02
  5. Step 5: Solve for x
    x = 2,475,647,276,301.02/1,686,943.90
  6. Step 6: Final answer
    x = 1,467,533.85

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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.