Finding the Fourth Proportional to 686,394,122.18, 1,029,203,437.80 and 627,826,999.02
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Solution
The fourth proportional to 686,394,122.18, 1,029,203,437.80 and 627,826,999.02 is: 941,385,837.75
Step by Step Solution
- Step 1: Write the proportion equation
686,394,122.18 : 1,029,203,437.80 = 627,826,999.02 : x - Step 2: Convert to fraction form
686,394,122.18/1,029,203,437.80 = 627,826,999.02/x - Step 3: Cross multiply
686,394,122.18x = 1,029,203,437.80 × 627,826,999.02 - Step 4: Simplify right side
686,394,122.18x = 646,161,705,735,041,152 - Step 5: Solve for x
x = 646,161,705,735,041,152/686,394,122.18 - Step 6: Final answer
x = 941,385,837.75
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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.