Home / 1,911,921,331.17-2,638,532,864.79-1,065,148,174.25

Finding the Fourth Proportional to 1,911,921,331.17, 2,638,532,864.79 and 1,065,148,174.25

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Solution

The fourth proportional to 1,911,921,331.17, 2,638,532,864.79 and 1,065,148,174.25 is: 1,469,949,844.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911,921,331.17 : 2,638,532,864.79 = 1,065,148,174.25 : x
  2. Step 2: Convert to fraction form
    1,911,921,331.17/2,638,532,864.79 = 1,065,148,174.25/x
  3. Step 3: Cross multiply
    1,911,921,331.17x = 2,638,532,864.79 × 1,065,148,174.25
  4. Step 4: Simplify right side
    1,911,921,331.17x = 2,810,428,463,616,497,664
  5. Step 5: Solve for x
    x = 2,810,428,463,616,497,664/1,911,921,331.17
  6. Step 6: Final answer
    x = 1,469,949,844.59

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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.