Finding the Fourth Proportional to 745,580,781.97, 1,028,902,612.85 and 415,548,835.09
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Solution
The fourth proportional to 745,580,781.97, 1,028,902,612.85 and 415,548,835.09 is: 573,458,024.31
Step by Step Solution
- Step 1: Write the proportion equation
745,580,781.97 : 1,028,902,612.85 = 415,548,835.09 : x - Step 2: Convert to fraction form
745,580,781.97/1,028,902,612.85 = 415,548,835.09/x - Step 3: Cross multiply
745,580,781.97x = 1,028,902,612.85 × 415,548,835.09 - Step 4: Simplify right side
745,580,781.97x = 427,559,282,190,874,752 - Step 5: Solve for x
x = 427,559,282,190,874,752/745,580,781.97 - Step 6: Final answer
x = 573,458,024.31
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.