Home / 780,461,984.44-1,077,105,643.08-428,106,076.66

Finding the Fourth Proportional to 780,461,984.44, 1,077,105,643.08 and 428,106,076.66

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Solution

The fourth proportional to 780,461,984.44, 1,077,105,643.08 and 428,106,076.66 is: 590,823,743.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,461,984.44 : 1,077,105,643.08 = 428,106,076.66 : x
  2. Step 2: Convert to fraction form
    780,461,984.44/1,077,105,643.08 = 428,106,076.66/x
  3. Step 3: Cross multiply
    780,461,984.44x = 1,077,105,643.08 × 428,106,076.66
  4. Step 4: Simplify right side
    780,461,984.44x = 461,115,471,003,420,672
  5. Step 5: Solve for x
    x = 461,115,471,003,420,672/780,461,984.44
  6. Step 6: Final answer
    x = 590,823,743.11

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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.