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Finding the Fourth Proportional to 505,296,032.40, 757,944,048.60 and 445,987,216.80

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Solution

The fourth proportional to 505,296,032.40, 757,944,048.60 and 445,987,216.80 is: 668,980,825.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,296,032.40 : 757,944,048.60 = 445,987,216.80 : x
  2. Step 2: Convert to fraction form
    505,296,032.40/757,944,048.60 = 445,987,216.80/x
  3. Step 3: Cross multiply
    505,296,032.40x = 757,944,048.60 × 445,987,216.80
  4. Step 4: Simplify right side
    505,296,032.40x = 338,033,356,725,237,952
  5. Step 5: Solve for x
    x = 338,033,356,725,237,952/505,296,032.40
  6. Step 6: Final answer
    x = 668,980,825.20

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1.5x scale

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.