Home / 1,515,993.78-2,271,421.17-915,693.78

Finding the Fourth Proportional to 1,515,993.78, 2,271,421.17 and 915,693.78

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Solution

The fourth proportional to 1,515,993.78, 2,271,421.17 and 915,693.78 is: 1,371,988.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515,993.78 : 2,271,421.17 = 915,693.78 : x
  2. Step 2: Convert to fraction form
    1,515,993.78/2,271,421.17 = 915,693.78/x
  3. Step 3: Cross multiply
    1,515,993.78x = 2,271,421.17 × 915,693.78
  4. Step 4: Simplify right side
    1,515,993.78x = 2,079,926,237,129.32
  5. Step 5: Solve for x
    x = 2,079,926,237,129.32/1,515,993.78
  6. Step 6: Final answer
    x = 1,371,988.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.