Home / 2,661,570.90-3,992,356.35-978,455.70

Finding the Fourth Proportional to 2,661,570.90, 3,992,356.35 and 978,455.70

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Solution

The fourth proportional to 2,661,570.90, 3,992,356.35 and 978,455.70 is: 1,467,683.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,661,570.90 : 3,992,356.35 = 978,455.70 : x
  2. Step 2: Convert to fraction form
    2,661,570.90/3,992,356.35 = 978,455.70/x
  3. Step 3: Cross multiply
    2,661,570.90x = 3,992,356.35 × 978,455.70
  4. Step 4: Simplify right side
    2,661,570.90x = 3,906,343,827,088.70
  5. Step 5: Solve for x
    x = 3,906,343,827,088.70/2,661,570.90
  6. Step 6: Final answer
    x = 1,467,683.55

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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.