Home / 1,311,916,579.39-1,810,466,388.69-783,326,756.71

Finding the Fourth Proportional to 1,311,916,579.39, 1,810,466,388.69 and 783,326,756.71

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Solution

The fourth proportional to 1,311,916,579.39, 1,810,466,388.69 and 783,326,756.71 is: 1,081,003,767.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,916,579.39 : 1,810,466,388.69 = 783,326,756.71 : x
  2. Step 2: Convert to fraction form
    1,311,916,579.39/1,810,466,388.69 = 783,326,756.71/x
  3. Step 3: Cross multiply
    1,311,916,579.39x = 1,810,466,388.69 × 783,326,756.71
  4. Step 4: Simplify right side
    1,311,916,579.39x = 1,418,186,764,385,004,032
  5. Step 5: Solve for x
    x = 1,418,186,764,385,004,032/1,311,916,579.39
  6. Step 6: Final answer
    x = 1,081,003,767.06

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Double scale
Find fourth proportional to 1,311,916,580.39, 1,810,466,390.07 and 783,326,757.71
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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.