Home / 911,503,609.43-1,257,876,257.38-493,815,894.73

Finding the Fourth Proportional to 911,503,609.43, 1,257,876,257.38 and 493,815,894.73

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Solution

The fourth proportional to 911,503,609.43, 1,257,876,257.38 and 493,815,894.73 is: 681,466,626.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,503,609.43 : 1,257,876,257.38 = 493,815,894.73 : x
  2. Step 2: Convert to fraction form
    911,503,609.43/1,257,876,257.38 = 493,815,894.73/x
  3. Step 3: Cross multiply
    911,503,609.43x = 1,257,876,257.38 × 493,815,894.73
  4. Step 4: Simplify right side
    911,503,609.43x = 621,159,289,493,349,248
  5. Step 5: Solve for x
    x = 621,159,289,493,349,248/911,503,609.43
  6. Step 6: Final answer
    x = 681,466,626.21

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Half scale
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Double scale
Find fourth proportional to 911,503,610.43, 1,257,876,258.76 and 493,815,895.73
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1.5x scale

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.