Home / 911,091,863.76-1,257,300,511.56-493,394,590.32

Finding the Fourth Proportional to 911,091,863.76, 1,257,300,511.56 and 493,394,590.32

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Solution

The fourth proportional to 911,091,863.76, 1,257,300,511.56 and 493,394,590.32 is: 680,881,144.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,091,863.76 : 1,257,300,511.56 = 493,394,590.32 : x
  2. Step 2: Convert to fraction form
    911,091,863.76/1,257,300,511.56 = 493,394,590.32/x
  3. Step 3: Cross multiply
    911,091,863.76x = 1,257,300,511.56 × 493,394,590.32
  4. Step 4: Simplify right side
    911,091,863.76x = 620,345,270,810,272,640
  5. Step 5: Solve for x
    x = 620,345,270,810,272,640/911,091,863.76
  6. Step 6: Final answer
    x = 680,881,144.36

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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.