Finding the Fourth Proportional to 885,185,941.20, 1,327,778,911.80 and 862,511,125.20
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Solution
The fourth proportional to 885,185,941.20, 1,327,778,911.80 and 862,511,125.20 is: 1,293,766,687.80
Step by Step Solution
- Step 1: Write the proportion equation
885,185,941.20 : 1,327,778,911.80 = 862,511,125.20 : x - Step 2: Convert to fraction form
885,185,941.20/1,327,778,911.80 = 862,511,125.20/x - Step 3: Cross multiply
885,185,941.20x = 1,327,778,911.80 × 862,511,125.20 - Step 4: Simplify right side
885,185,941.20x = 1,145,224,083,233,449,600 - Step 5: Solve for x
x = 1,145,224,083,233,449,600/885,185,941.20 - Step 6: Final answer
x = 1,293,766,687.80
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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.