Finding the Fourth Proportional to 403,708,582.05, 557,118,087.30 and 218,069,679.75
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Solution
The fourth proportional to 403,708,582.05, 557,118,087.30 and 218,069,679.75 is: 300,936,289.89
Step by Step Solution
- Step 1: Write the proportion equation
403,708,582.05 : 557,118,087.30 = 218,069,679.75 : x - Step 2: Convert to fraction form
403,708,582.05/557,118,087.30 = 218,069,679.75/x - Step 3: Cross multiply
403,708,582.05x = 557,118,087.30 × 218,069,679.75 - Step 4: Simplify right side
403,708,582.05x = 121,490,562,880,443,536 - Step 5: Solve for x
x = 121,490,562,880,443,536/403,708,582.05 - Step 6: Final answer
x = 300,936,289.89
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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.