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Finding the Fourth Proportional to 1,315,583.69, 1,815,505.48 and 711,971.69

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Solution

The fourth proportional to 1,315,583.69, 1,815,505.48 and 711,971.69 is: 982,520.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,583.69 : 1,815,505.48 = 711,971.69 : x
  2. Step 2: Convert to fraction form
    1,315,583.69/1,815,505.48 = 711,971.69/x
  3. Step 3: Cross multiply
    1,315,583.69x = 1,815,505.48 × 711,971.69
  4. Step 4: Simplify right side
    1,315,583.69x = 1,292,588,501,240.00
  5. Step 5: Solve for x
    x = 1,292,588,501,240.00/1,315,583.69
  6. Step 6: Final answer
    x = 982,520.92

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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.