Finding the Fourth Proportional to 921,752,470.75, 1,272,116,986.03 and 564,757,164.44
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Solution
The fourth proportional to 921,752,470.75, 1,272,116,986.03 and 564,757,164.44 is: 779,425,284.62
Step by Step Solution
- Step 1: Write the proportion equation
921,752,470.75 : 1,272,116,986.03 = 564,757,164.44 : x - Step 2: Convert to fraction form
921,752,470.75/1,272,116,986.03 = 564,757,164.44/x - Step 3: Cross multiply
921,752,470.75x = 1,272,116,986.03 × 564,757,164.44 - Step 4: Simplify right side
921,752,470.75x = 718,437,181,866,261,888 - Step 5: Solve for x
x = 718,437,181,866,261,888/921,752,470.75 - Step 6: Final answer
x = 779,425,284.62
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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.