Home / 431,360,782.40-647,041,173.60-329,324,110.40

Finding the Fourth Proportional to 431,360,782.40, 647,041,173.60 and 329,324,110.40

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Solution

The fourth proportional to 431,360,782.40, 647,041,173.60 and 329,324,110.40 is: 493,986,165.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,360,782.40 : 647,041,173.60 = 329,324,110.40 : x
  2. Step 2: Convert to fraction form
    431,360,782.40/647,041,173.60 = 329,324,110.40/x
  3. Step 3: Cross multiply
    431,360,782.40x = 647,041,173.60 × 329,324,110.40
  4. Step 4: Simplify right side
    431,360,782.40x = 213,086,258,887,991,968
  5. Step 5: Solve for x
    x = 213,086,258,887,991,968/431,360,782.40
  6. Step 6: Final answer
    x = 493,986,165.60

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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.