Home / 468,112,167.09-645,749,876.07-289,438,940.37

Finding the Fourth Proportional to 468,112,167.09, 645,749,876.07 and 289,438,940.37

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Solution

The fourth proportional to 468,112,167.09, 645,749,876.07 and 289,438,940.37 is: 399,274,304.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,112,167.09 : 645,749,876.07 = 289,438,940.37 : x
  2. Step 2: Convert to fraction form
    468,112,167.09/645,749,876.07 = 289,438,940.37/x
  3. Step 3: Cross multiply
    468,112,167.09x = 645,749,876.07 × 289,438,940.37
  4. Step 4: Simplify right side
    468,112,167.09x = 186,905,159,873,759,648
  5. Step 5: Solve for x
    x = 186,905,159,873,759,648/468,112,167.09
  6. Step 6: Final answer
    x = 399,274,304.35

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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.