Home / 1,278,302,400.42-1,765,275,637.62-1,208,661,371.22

Finding the Fourth Proportional to 1,278,302,400.42, 1,765,275,637.62 and 1,208,661,371.22

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Solution

The fourth proportional to 1,278,302,400.42, 1,765,275,637.62 and 1,208,661,371.22 is: 1,669,104,643.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,302,400.42 : 1,765,275,637.62 = 1,208,661,371.22 : x
  2. Step 2: Convert to fraction form
    1,278,302,400.42/1,765,275,637.62 = 1,208,661,371.22/x
  3. Step 3: Cross multiply
    1,278,302,400.42x = 1,765,275,637.62 × 1,208,661,371.22
  4. Step 4: Simplify right side
    1,278,302,400.42x = 2,133,620,472,747,048,960
  5. Step 5: Solve for x
    x = 2,133,620,472,747,048,960/1,278,302,400.42
  6. Step 6: Final answer
    x = 1,669,104,643.82

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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.