Finding the Fourth Proportional to 427,305,479.31, 640,946,261.49 and 136,190,071.12
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Solution
The fourth proportional to 427,305,479.31, 640,946,261.49 and 136,190,071.12 is: 204,281,295.61
Step by Step Solution
- Step 1: Write the proportion equation
427,305,479.31 : 640,946,261.49 = 136,190,071.12 : x - Step 2: Convert to fraction form
427,305,479.31/640,946,261.49 = 136,190,071.12/x - Step 3: Cross multiply
427,305,479.31x = 640,946,261.49 × 136,190,071.12 - Step 4: Simplify right side
427,305,479.31x = 87,290,516,936,421,216 - Step 5: Solve for x
x = 87,290,516,936,421,216/427,305,479.31 - Step 6: Final answer
x = 204,281,295.61
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.