Finding the Fourth Proportional to 428,896,178.18, 643,237,979.04 and 122,190,948.26
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Solution
The fourth proportional to 428,896,178.18, 643,237,979.04 and 122,190,948.26 is: 183,256,141.26
Step by Step Solution
- Step 1: Write the proportion equation
428,896,178.18 : 643,237,979.04 = 122,190,948.26 : x - Step 2: Convert to fraction form
428,896,178.18/643,237,979.04 = 122,190,948.26/x - Step 3: Cross multiply
428,896,178.18x = 643,237,979.04 × 122,190,948.26 - Step 4: Simplify right side
428,896,178.18x = 78,597,858,615,743,600 - Step 5: Solve for x
x = 78,597,858,615,743,600/428,896,178.18 - Step 6: Final answer
x = 183,256,141.26
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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.