Home / 1,384,238.60-2,076,357.90-978,331.40

Finding the Fourth Proportional to 1,384,238.60, 2,076,357.90 and 978,331.40

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Solution

The fourth proportional to 1,384,238.60, 2,076,357.90 and 978,331.40 is: 1,467,497.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384,238.60 : 2,076,357.90 = 978,331.40 : x
  2. Step 2: Convert to fraction form
    1,384,238.60/2,076,357.90 = 978,331.40/x
  3. Step 3: Cross multiply
    1,384,238.60x = 2,076,357.90 × 978,331.40
  4. Step 4: Simplify right side
    1,384,238.60x = 2,031,366,131,208.06
  5. Step 5: Solve for x
    x = 2,031,366,131,208.06/1,384,238.60
  6. Step 6: Final answer
    x = 1,467,497.10

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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.