Finding the Fourth Proportional to 643,395,280.84, 965,237,296.07 and 206,720,839.96
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Solution
The fourth proportional to 643,395,280.84, 965,237,296.07 and 206,720,839.96 is: 310,127,647.10
Step by Step Solution
- Step 1: Write the proportion equation
643,395,280.84 : 965,237,296.07 = 206,720,839.96 : x - Step 2: Convert to fraction form
643,395,280.84/965,237,296.07 = 206,720,839.96/x - Step 3: Cross multiply
643,395,280.84x = 965,237,296.07 × 206,720,839.96 - Step 4: Simplify right side
643,395,280.84x = 199,534,664,602,413,312 - Step 5: Solve for x
x = 199,534,664,602,413,312/643,395,280.84 - Step 6: Final answer
x = 310,127,647.10
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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.