Finding the Fourth Proportional to 1,092,177,788.40, 1,638,266,682.60 and 724,845,769.20
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Solution
The fourth proportional to 1,092,177,788.40, 1,638,266,682.60 and 724,845,769.20 is: 1,087,268,653.80
Step by Step Solution
- Step 1: Write the proportion equation
1,092,177,788.40 : 1,638,266,682.60 = 724,845,769.20 : x - Step 2: Convert to fraction form
1,092,177,788.40/1,638,266,682.60 = 724,845,769.20/x - Step 3: Cross multiply
1,092,177,788.40x = 1,638,266,682.60 × 724,845,769.20 - Step 4: Simplify right side
1,092,177,788.40x = 1,187,490,673,703,929,344 - Step 5: Solve for x
x = 1,187,490,673,703,929,344/1,092,177,788.40 - Step 6: Final answer
x = 1,087,268,653.80
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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.