Finding the Fourth Proportional to 428,472,055.68, 591,356,071.08 and 261,305,298.96
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Solution
The fourth proportional to 428,472,055.68, 591,356,071.08 and 261,305,298.96 is: 360,640,730.00
Step by Step Solution
- Step 1: Write the proportion equation
428,472,055.68 : 591,356,071.08 = 261,305,298.96 : x - Step 2: Convert to fraction form
428,472,055.68/591,356,071.08 = 261,305,298.96/x - Step 3: Cross multiply
428,472,055.68x = 591,356,071.08 × 261,305,298.96 - Step 4: Simplify right side
428,472,055.68x = 154,524,474,945,370,432 - Step 5: Solve for x
x = 154,524,474,945,370,432/428,472,055.68 - Step 6: Final answer
x = 360,640,730.00
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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.