Finding the Fourth Proportional to 789,992,530.80, 1,090,318,863.96 and 472,432,026.48
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Solution
The fourth proportional to 789,992,530.80, 1,090,318,863.96 and 472,432,026.48 is: 652,033,443.77
Step by Step Solution
- Step 1: Write the proportion equation
789,992,530.80 : 1,090,318,863.96 = 472,432,026.48 : x - Step 2: Convert to fraction form
789,992,530.80/1,090,318,863.96 = 472,432,026.48/x - Step 3: Cross multiply
789,992,530.80x = 1,090,318,863.96 × 472,432,026.48 - Step 4: Simplify right side
789,992,530.80x = 515,101,550,409,994,304 - Step 5: Solve for x
x = 515,101,550,409,994,304/789,992,530.80 - Step 6: Final answer
x = 652,033,443.77
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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.