Finding the Third Proportional to 405,487,857.75 and 628,153,931.63
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Solution
The third proportional to 405,487,857.75 and 628,153,931.63 is: 973,092,915.79
Step by Step Solution
- Step 1: Write the proportion equation
405,487,857.75 : 628,153,931.63 = 628,153,931.63 : x - Step 2: Convert to fraction form
405,487,857.75/628,153,931.63 = 628,153,931.63/x - Step 3: Cross multiply
405,487,857.75x = 628,153,931.63 × 628,153,931.63 - Step 4: Simplify right side
405,487,857.75x = 394,577,361,815,945,152 - Step 5: Solve for x
x = 394,577,361,815,945,152/405,487,857.75 - Step 6: Final answer
x = 973,092,915.79
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Why These Related Problems?
These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.