Home / 468,112,160.78-645,749,867.36-289,438,934.06

Finding the Fourth Proportional to 468,112,160.78, 645,749,867.36 and 289,438,934.06

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Solution

The fourth proportional to 468,112,160.78, 645,749,867.36 and 289,438,934.06 is: 399,274,295.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,112,160.78 : 645,749,867.36 = 289,438,934.06 : x
  2. Step 2: Convert to fraction form
    468,112,160.78/645,749,867.36 = 289,438,934.06/x
  3. Step 3: Cross multiply
    468,112,160.78x = 645,749,867.36 × 289,438,934.06
  4. Step 4: Simplify right side
    468,112,160.78x = 186,905,153,273,388,864
  5. Step 5: Solve for x
    x = 186,905,153,273,388,864/468,112,160.78
  6. Step 6: Final answer
    x = 399,274,295.63

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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.