Finding the Fourth Proportional to 619,531,427.75, 855,015,129.68 and 462,626,129.70
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Solution
The fourth proportional to 619,531,427.75, 855,015,129.68 and 462,626,129.70 is: 638,470,176.91
Step by Step Solution
- Step 1: Write the proportion equation
619,531,427.75 : 855,015,129.68 = 462,626,129.70 : x - Step 2: Convert to fraction form
619,531,427.75/855,015,129.68 = 462,626,129.70/x - Step 3: Cross multiply
619,531,427.75x = 855,015,129.68 × 462,626,129.70 - Step 4: Simplify right side
619,531,427.75x = 395,552,340,276,488,832 - Step 5: Solve for x
x = 395,552,340,276,488,832/619,531,427.75 - Step 6: Final answer
x = 638,470,176.91
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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.