Home / 1,315,220.89-1,815,004.80-711,608.89

Finding the Fourth Proportional to 1,315,220.89, 1,815,004.80 and 711,608.89

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Solution

The fourth proportional to 1,315,220.89, 1,815,004.80 and 711,608.89 is: 982,020.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,220.89 : 1,815,004.80 = 711,608.89 : x
  2. Step 2: Convert to fraction form
    1,315,220.89/1,815,004.80 = 711,608.89/x
  3. Step 3: Cross multiply
    1,315,220.89x = 1,815,004.80 × 711,608.89
  4. Step 4: Simplify right side
    1,315,220.89x = 1,291,573,551,072.67
  5. Step 5: Solve for x
    x = 1,291,573,551,072.67/1,315,220.89
  6. Step 6: Final answer
    x = 982,020.25

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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.