Finding the Fourth Proportional to 696,629,971.67, 961,132,935.74 and 395,165,598.82
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Solution
The fourth proportional to 696,629,971.67, 961,132,935.74 and 395,165,598.82 is: 545,205,758.50
Step by Step Solution
- Step 1: Write the proportion equation
696,629,971.67 : 961,132,935.74 = 395,165,598.82 : x - Step 2: Convert to fraction form
696,629,971.67/961,132,935.74 = 395,165,598.82/x - Step 3: Cross multiply
696,629,971.67x = 961,132,935.74 × 395,165,598.82 - Step 4: Simplify right side
696,629,971.67x = 379,806,672,092,943,040 - Step 5: Solve for x
x = 379,806,672,092,943,040/696,629,971.67 - Step 6: Final answer
x = 545,205,758.50
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Double scale
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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.