Home / 1,215,131.86-1,676,980.07-671,315.19

Finding the Fourth Proportional to 1,215,131.86, 1,676,980.07 and 671,315.19

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Solution

The fourth proportional to 1,215,131.86, 1,676,980.07 and 671,315.19 is: 926,469.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,131.86 : 1,676,980.07 = 671,315.19 : x
  2. Step 2: Convert to fraction form
    1,215,131.86/1,676,980.07 = 671,315.19/x
  3. Step 3: Cross multiply
    1,215,131.86x = 1,676,980.07 × 671,315.19
  4. Step 4: Simplify right side
    1,215,131.86x = 1,125,782,194,318.26
  5. Step 5: Solve for x
    x = 1,125,782,194,318.26/1,215,131.86
  6. Step 6: Final answer
    x = 926,469.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.