Finding the Fourth Proportional to 521,659,274.40, 719,897,253.84 and 286,731,660.96
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Solution
The fourth proportional to 521,659,274.40, 719,897,253.84 and 286,731,660.96 is: 395,693,789.88
Step by Step Solution
- Step 1: Write the proportion equation
521,659,274.40 : 719,897,253.84 = 286,731,660.96 : x - Step 2: Convert to fraction form
521,659,274.40/719,897,253.84 = 286,731,660.96/x - Step 3: Cross multiply
521,659,274.40x = 719,897,253.84 × 286,731,660.96 - Step 4: Simplify right side
521,659,274.40x = 206,417,335,314,085,920 - Step 5: Solve for x
x = 206,417,335,314,085,920/521,659,274.40 - Step 6: Final answer
x = 395,693,789.88
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.