Home / 393,632,719-543,213,131.48-212,579,683.04

Finding the Fourth Proportional to 393,632,719, 543,213,131.48 and 212,579,683.04

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Solution

The fourth proportional to 393,632,719, 543,213,131.48 and 212,579,683.04 is: 293,359,951.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,632,719 : 543,213,131.48 = 212,579,683.04 : x
  2. Step 2: Convert to fraction form
    393,632,719/543,213,131.48 = 212,579,683.04/x
  3. Step 3: Cross multiply
    393,632,719x = 543,213,131.48 × 212,579,683.04
  4. Step 4: Simplify right side
    393,632,719x = 115,476,075,313,184,240
  5. Step 5: Solve for x
    x = 115,476,075,313,184,240/393,632,719
  6. Step 6: Final answer
    x = 293,359,951.39

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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.