Home / 468,112,161.78-645,749,868.73-289,438,935.06

Finding the Fourth Proportional to 468,112,161.78, 645,749,868.73 and 289,438,935.06

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Solution

The fourth proportional to 468,112,161.78, 645,749,868.73 and 289,438,935.06 is: 399,274,297.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,112,161.78 : 645,749,868.73 = 289,438,935.06 : x
  2. Step 2: Convert to fraction form
    468,112,161.78/645,749,868.73 = 289,438,935.06/x
  3. Step 3: Cross multiply
    468,112,161.78x = 645,749,868.73 × 289,438,935.06
  4. Step 4: Simplify right side
    468,112,161.78x = 186,905,154,320,346,016
  5. Step 5: Solve for x
    x = 186,905,154,320,346,016/468,112,161.78
  6. Step 6: Final answer
    x = 399,274,297.02

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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.