Home / 1,311,916,578.39-1,810,466,387.31-783,326,755.71

Finding the Fourth Proportional to 1,311,916,578.39, 1,810,466,387.31 and 783,326,755.71

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Solution

The fourth proportional to 1,311,916,578.39, 1,810,466,387.31 and 783,326,755.71 is: 1,081,003,765.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,916,578.39 : 1,810,466,387.31 = 783,326,755.71 : x
  2. Step 2: Convert to fraction form
    1,311,916,578.39/1,810,466,387.31 = 783,326,755.71/x
  3. Step 3: Cross multiply
    1,311,916,578.39x = 1,810,466,387.31 × 783,326,755.71
  4. Step 4: Simplify right side
    1,311,916,578.39x = 1,418,186,761,493,546,752
  5. Step 5: Solve for x
    x = 1,418,186,761,493,546,752/1,311,916,578.39
  6. Step 6: Final answer
    x = 1,081,003,765.68

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Double scale
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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.