Home / 1,422,612,976.36-1,963,229,152.80-778,858,171.24

Finding the Fourth Proportional to 1,422,612,976.36, 1,963,229,152.80 and 778,858,171.24

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Solution

The fourth proportional to 1,422,612,976.36, 1,963,229,152.80 and 778,858,171.24 is: 1,074,837,002.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422,612,976.36 : 1,963,229,152.80 = 778,858,171.24 : x
  2. Step 2: Convert to fraction form
    1,422,612,976.36/1,963,229,152.80 = 778,858,171.24/x
  3. Step 3: Cross multiply
    1,422,612,976.36x = 1,963,229,152.80 × 778,858,171.24
  4. Step 4: Simplify right side
    1,422,612,976.36x = 1,529,077,067,674,862,592
  5. Step 5: Solve for x
    x = 1,529,077,067,674,862,592/1,422,612,976.36
  6. Step 6: Final answer
    x = 1,074,837,002.81

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Double scale
Find fourth proportional to 1,422,612,977.36, 1,963,229,154.18 and 778,858,172.24
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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.