Finding the Fourth Proportional to 643,395,281.84, 965,237,297.57 and 206,720,840.96
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Solution
The fourth proportional to 643,395,281.84, 965,237,297.57 and 206,720,840.96 is: 310,127,648.60
Step by Step Solution
- Step 1: Write the proportion equation
643,395,281.84 : 965,237,297.57 = 206,720,840.96 : x - Step 2: Convert to fraction form
643,395,281.84/965,237,297.57 = 206,720,840.96/x - Step 3: Cross multiply
643,395,281.84x = 965,237,297.57 × 206,720,840.96 - Step 4: Simplify right side
643,395,281.84x = 199,534,665,879,628,192 - Step 5: Solve for x
x = 199,534,665,879,628,192/643,395,281.84 - Step 6: Final answer
x = 310,127,648.60
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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.