Finding the Fourth Proportional to 1,117,948,122.74, 1,542,705,453.56 and 616,155,385.98
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Solution
The fourth proportional to 1,117,948,122.74, 1,542,705,453.56 and 616,155,385.98 is: 850,259,734.65
Step by Step Solution
- Step 1: Write the proportion equation
1,117,948,122.74 : 1,542,705,453.56 = 616,155,385.98 : x - Step 2: Convert to fraction form
1,117,948,122.74/1,542,705,453.56 = 616,155,385.98/x - Step 3: Cross multiply
1,117,948,122.74x = 1,542,705,453.56 × 616,155,385.98 - Step 4: Simplify right side
1,117,948,122.74x = 950,546,274,191,712,768 - Step 5: Solve for x
x = 950,546,274,191,712,768/1,117,948,122.74 - Step 6: Final answer
x = 850,259,734.65
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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.