Home / 1,187,244,784,065.70-1,638,307,887,028.80-666,299,590,983.90

Finding the Fourth Proportional to 1,187,244,784,065.70, 1,638,307,887,028.80 and 666,299,590,983.90

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Solution

The fourth proportional to 1,187,244,784,065.70, 1,638,307,887,028.80 and 666,299,590,983.90 is: 919,442,973,920.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,244,784,065.70 : 1,638,307,887,028.80 = 666,299,590,983.90 : x
  2. Step 2: Convert to fraction form
    1,187,244,784,065.70/1,638,307,887,028.80 = 666,299,590,983.90/x
  3. Step 3: Cross multiply
    1,187,244,784,065.70x = 1,638,307,887,028.80 × 666,299,590,983.90
  4. Step 4: Simplify right side
    1,187,244,784,065.70x = 1,091,603,875,032,986,978,091,008
  5. Step 5: Solve for x
    x = 1,091,603,875,032,986,978,091,008/1,187,244,784,065.70
  6. Step 6: Final answer
    x = 919,442,973,920.52

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Double scale
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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.