Home / 936,422,916.72-1,292,246,714.52-518,733,910.32

Finding the Fourth Proportional to 936,422,916.72, 1,292,246,714.52 and 518,733,910.32

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Solution

The fourth proportional to 936,422,916.72, 1,292,246,714.52 and 518,733,910.32 is: 715,843,428.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    936,422,916.72 : 1,292,246,714.52 = 518,733,910.32 : x
  2. Step 2: Convert to fraction form
    936,422,916.72/1,292,246,714.52 = 518,733,910.32/x
  3. Step 3: Cross multiply
    936,422,916.72x = 1,292,246,714.52 × 518,733,910.32
  4. Step 4: Simplify right side
    936,422,916.72x = 670,332,191,321,132,288
  5. Step 5: Solve for x
    x = 670,332,191,321,132,288/936,422,916.72
  6. Step 6: Final answer
    x = 715,843,428.60

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Double scale
Find fourth proportional to 936,422,917.72, 1,292,246,715.90 and 518,733,911.32
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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.