Finding the Fourth Proportional to 7,867,658,955.92, 10,858,476,787.74 and 5,008,887,980.09
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Solution
The fourth proportional to 7,867,658,955.92, 10,858,476,787.74 and 5,008,887,980.09 is: 6,912,970,448.89
Step by Step Solution
- Step 1: Write the proportion equation
7,867,658,955.92 : 10,858,476,787.74 = 5,008,887,980.09 : x - Step 2: Convert to fraction form
7,867,658,955.92/10,858,476,787.74 = 5,008,887,980.09/x - Step 3: Cross multiply
7,867,658,955.92x = 10,858,476,787.74 × 5,008,887,980.09 - Step 4: Simplify right side
7,867,658,955.92x = 54,388,893,864,197,160,960 - Step 5: Solve for x
x = 54,388,893,864,197,160,960/7,867,658,955.92 - Step 6: Final answer
x = 6,912,970,448.89
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1.5x scale
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.