Home / 1,311,875.79-1,967,971.32-1,240,131.26

Finding the Fourth Proportional to 1,311,875.79, 1,967,971.32 and 1,240,131.26

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Solution

The fourth proportional to 1,311,875.79, 1,967,971.32 and 1,240,131.26 is: 1,860,345.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,875.79 : 1,967,971.32 = 1,240,131.26 : x
  2. Step 2: Convert to fraction form
    1,311,875.79/1,967,971.32 = 1,240,131.26/x
  3. Step 3: Cross multiply
    1,311,875.79x = 1,967,971.32 × 1,240,131.26
  4. Step 4: Simplify right side
    1,311,875.79x = 2,440,542,755,768.22
  5. Step 5: Solve for x
    x = 2,440,542,755,768.22/1,311,875.79
  6. Step 6: Final answer
    x = 1,860,345.90

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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.