Home / 1,311,916,578.89-1,810,466,388-783,326,756.21

Finding the Fourth Proportional to 1,311,916,578.89, 1,810,466,388 and 783,326,756.21

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Solution

The fourth proportional to 1,311,916,578.89, 1,810,466,388 and 783,326,756.21 is: 1,081,003,766.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,916,578.89 : 1,810,466,388 = 783,326,756.21 : x
  2. Step 2: Convert to fraction form
    1,311,916,578.89/1,810,466,388 = 783,326,756.21/x
  3. Step 3: Cross multiply
    1,311,916,578.89x = 1,810,466,388 × 783,326,756.21
  4. Step 4: Simplify right side
    1,311,916,578.89x = 1,418,186,762,939,275,264
  5. Step 5: Solve for x
    x = 1,418,186,762,939,275,264/1,311,916,578.89
  6. Step 6: Final answer
    x = 1,081,003,766.37

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Double scale
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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.