Home / 1,231,860.78-1,851,071.67-663,678.18

Finding the Fourth Proportional to 1,231,860.78, 1,851,071.67 and 663,678.18

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Solution

The fourth proportional to 1,231,860.78, 1,851,071.67 and 663,678.18 is: 997,284.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,860.78 : 1,851,071.67 = 663,678.18 : x
  2. Step 2: Convert to fraction form
    1,231,860.78/1,851,071.67 = 663,678.18/x
  3. Step 3: Cross multiply
    1,231,860.78x = 1,851,071.67 × 663,678.18
  4. Step 4: Simplify right side
    1,231,860.78x = 1,228,515,876,995.16
  5. Step 5: Solve for x
    x = 1,228,515,876,995.16/1,231,860.78
  6. Step 6: Final answer
    x = 997,284.67

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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.