Home / 1,478,525,448.78-2,040,381,243.63-818,486,749.26

Finding the Fourth Proportional to 1,478,525,448.78, 2,040,381,243.63 and 818,486,749.26

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Solution

The fourth proportional to 1,478,525,448.78, 2,040,381,243.63 and 818,486,749.26 is: 1,129,520,640.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478,525,448.78 : 2,040,381,243.63 = 818,486,749.26 : x
  2. Step 2: Convert to fraction form
    1,478,525,448.78/2,040,381,243.63 = 818,486,749.26/x
  3. Step 3: Cross multiply
    1,478,525,448.78x = 2,040,381,243.63 × 818,486,749.26
  4. Step 4: Simplify right side
    1,478,525,448.78x = 1,670,025,011,349,794,816
  5. Step 5: Solve for x
    x = 1,670,025,011,349,794,816/1,478,525,448.78
  6. Step 6: Final answer
    x = 1,129,520,640.13

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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.