Home / 644,871,995.36-889,643,112.72-409,796,790.56

Finding the Fourth Proportional to 644,871,995.36, 889,643,112.72 and 409,796,790.56

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Solution

The fourth proportional to 644,871,995.36, 889,643,112.72 and 409,796,790.56 is: 565,341,486.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,871,995.36 : 889,643,112.72 = 409,796,790.56 : x
  2. Step 2: Convert to fraction form
    644,871,995.36/889,643,112.72 = 409,796,790.56/x
  3. Step 3: Cross multiply
    644,871,995.36x = 889,643,112.72 × 409,796,790.56
  4. Step 4: Simplify right side
    644,871,995.36x = 364,572,892,336,464,320
  5. Step 5: Solve for x
    x = 364,572,892,336,464,320/644,871,995.36
  6. Step 6: Final answer
    x = 565,341,486.31

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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.