Home / 1,315,621.44-1,815,561.92-712,009.28

Finding the Fourth Proportional to 1,315,621.44, 1,815,561.92 and 712,009.28

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Solution

The fourth proportional to 1,315,621.44, 1,815,561.92 and 712,009.28 is: 982,575.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,621.44 : 1,815,561.92 = 712,009.28 : x
  2. Step 2: Convert to fraction form
    1,315,621.44/1,815,561.92 = 712,009.28/x
  3. Step 3: Cross multiply
    1,315,621.44x = 1,815,561.92 × 712,009.28
  4. Step 4: Simplify right side
    1,315,621.44x = 1,292,696,935,454.62
  5. Step 5: Solve for x
    x = 1,292,696,935,454.62/1,315,621.44
  6. Step 6: Final answer
    x = 982,575.15

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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.