Home / 1,213,728.89-1,673,999.40-778,187.84

Finding the Fourth Proportional to 1,213,728.89, 1,673,999.40 and 778,187.84

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Solution

The fourth proportional to 1,213,728.89, 1,673,999.40 and 778,187.84 is: 1,073,292.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,728.89 : 1,673,999.40 = 778,187.84 : x
  2. Step 2: Convert to fraction form
    1,213,728.89/1,673,999.40 = 778,187.84/x
  3. Step 3: Cross multiply
    1,213,728.89x = 1,673,999.40 × 778,187.84
  4. Step 4: Simplify right side
    1,213,728.89x = 1,302,685,968,877.30
  5. Step 5: Solve for x
    x = 1,302,685,968,877.30/1,213,728.89
  6. Step 6: Final answer
    x = 1,073,292.38

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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.