Finding the Fourth Proportional to 608,978,682.20, 840,398,643.63 and 330,523,543.64
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Solution
The fourth proportional to 608,978,682.20, 840,398,643.63 and 330,523,543.64 is: 456,126,865.99
Step by Step Solution
- Step 1: Write the proportion equation
608,978,682.20 : 840,398,643.63 = 330,523,543.64 : x - Step 2: Convert to fraction form
608,978,682.20/840,398,643.63 = 330,523,543.64/x - Step 3: Cross multiply
608,978,682.20x = 840,398,643.63 × 330,523,543.64 - Step 4: Simplify right side
608,978,682.20x = 277,771,537,764,938,080 - Step 5: Solve for x
x = 277,771,537,764,938,080/608,978,682.20 - Step 6: Final answer
x = 456,126,865.99
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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.