Home / 431,367,408.40-647,051,112.60-323,871,984.40

Finding the Fourth Proportional to 431,367,408.40, 647,051,112.60 and 323,871,984.40

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Solution

The fourth proportional to 431,367,408.40, 647,051,112.60 and 323,871,984.40 is: 485,807,976.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,367,408.40 : 647,051,112.60 = 323,871,984.40 : x
  2. Step 2: Convert to fraction form
    431,367,408.40/647,051,112.60 = 323,871,984.40/x
  3. Step 3: Cross multiply
    431,367,408.40x = 647,051,112.60 × 323,871,984.40
  4. Step 4: Simplify right side
    431,367,408.40x = 209,561,727,845,989,824
  5. Step 5: Solve for x
    x = 209,561,727,845,989,824/431,367,408.40
  6. Step 6: Final answer
    x = 485,807,976.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.