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Finding the Fourth Proportional to 1,315,593.24, 1,815,515.10 and 711,981.24

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Solution

The fourth proportional to 1,315,593.24, 1,815,515.10 and 711,981.24 is: 982,532.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,593.24 : 1,815,515.10 = 711,981.24 : x
  2. Step 2: Convert to fraction form
    1,315,593.24/1,815,515.10 = 711,981.24/x
  3. Step 3: Cross multiply
    1,315,593.24x = 1,815,515.10 × 711,981.24
  4. Step 4: Simplify right side
    1,315,593.24x = 1,292,612,692,136.72
  5. Step 5: Solve for x
    x = 1,292,612,692,136.72/1,315,593.24
  6. Step 6: Final answer
    x = 982,532.18

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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.