Home / 718,890,638,255.70-992,100,265,750.71-398,106,473,363.58

Finding the Fourth Proportional to 718,890,638,255.70, 992,100,265,750.71 and 398,106,473,363.58

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Solution

The fourth proportional to 718,890,638,255.70, 992,100,265,750.71 and 398,106,473,363.58 is: 549,404,202,813.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,890,638,255.70 : 992,100,265,750.71 = 398,106,473,363.58 : x
  2. Step 2: Convert to fraction form
    718,890,638,255.70/992,100,265,750.71 = 398,106,473,363.58/x
  3. Step 3: Cross multiply
    718,890,638,255.70x = 992,100,265,750.71 × 398,106,473,363.58
  4. Step 4: Simplify right side
    718,890,638,255.70x = 394,961,538,021,085,641,965,568
  5. Step 5: Solve for x
    x = 394,961,538,021,085,641,965,568/718,890,638,255.70
  6. Step 6: Final answer
    x = 549,404,202,813.67

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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.