Home / 643,255,503.39-964,990,877.36-505,075,536.27

Finding the Fourth Proportional to 643,255,503.39, 964,990,877.36 and 505,075,536.27

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Solution

The fourth proportional to 643,255,503.39, 964,990,877.36 and 505,075,536.27 is: 757,697,807.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,255,503.39 : 964,990,877.36 = 505,075,536.27 : x
  2. Step 2: Convert to fraction form
    643,255,503.39/964,990,877.36 = 505,075,536.27/x
  3. Step 3: Cross multiply
    643,255,503.39x = 964,990,877.36 × 505,075,536.27
  4. Step 4: Simplify right side
    643,255,503.39x = 487,393,284,875,734,400
  5. Step 5: Solve for x
    x = 487,393,284,875,734,400/643,255,503.39
  6. Step 6: Final answer
    x = 757,697,807.96

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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.