Finding the Fourth Proportional to 428,055,635.74, 590,719,800.63 and 232,485,347.74
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Solution
The fourth proportional to 428,055,635.74, 590,719,800.63 and 232,485,347.74 is: 320,831,421.90
Step by Step Solution
- Step 1: Write the proportion equation
428,055,635.74 : 590,719,800.63 = 232,485,347.74 : x - Step 2: Convert to fraction form
428,055,635.74/590,719,800.63 = 232,485,347.74/x - Step 3: Cross multiply
428,055,635.74x = 590,719,800.63 × 232,485,347.74 - Step 4: Simplify right side
428,055,635.74x = 137,333,698,266,369,024 - Step 5: Solve for x
x = 137,333,698,266,369,024/428,055,635.74 - Step 6: Final answer
x = 320,831,421.90
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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.