Finding the Fourth Proportional to 939,841,281.33, 1,296,904,930.18 and 543,389,707.05
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Solution
The fourth proportional to 939,841,281.33, 1,296,904,930.18 and 543,389,707.05 is: 749,833,832.67
Step by Step Solution
- Step 1: Write the proportion equation
939,841,281.33 : 1,296,904,930.18 = 543,389,707.05 : x - Step 2: Convert to fraction form
939,841,281.33/1,296,904,930.18 = 543,389,707.05/x - Step 3: Cross multiply
939,841,281.33x = 1,296,904,930.18 × 543,389,707.05 - Step 4: Simplify right side
939,841,281.33x = 704,724,790,082,210,816 - Step 5: Solve for x
x = 704,724,790,082,210,816/939,841,281.33 - Step 6: Final answer
x = 749,833,832.67
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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.