Finding the Fourth Proportional to 1,299,887,091.12, 1,949,761,964.80 and 426,373,397.04
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Solution
The fourth proportional to 1,299,887,091.12, 1,949,761,964.80 and 426,373,397.04 is: 639,537,570.63
Step by Step Solution
- Step 1: Write the proportion equation
1,299,887,091.12 : 1,949,761,964.80 = 426,373,397.04 : x - Step 2: Convert to fraction form
1,299,887,091.12/1,949,761,964.80 = 426,373,397.04/x - Step 3: Cross multiply
1,299,887,091.12x = 1,949,761,964.80 × 426,373,397.04 - Step 4: Simplify right side
1,299,887,091.12x = 831,326,632,351,160,960 - Step 5: Solve for x
x = 831,326,632,351,160,960/1,299,887,091.12 - Step 6: Final answer
x = 639,537,570.63
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.