Finding the Fourth Proportional to 1,202,364,138.30, 1,803,546,207.45 and 718,634,730.30
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Solution
The fourth proportional to 1,202,364,138.30, 1,803,546,207.45 and 718,634,730.30 is: 1,077,952,095.45
Step by Step Solution
- Step 1: Write the proportion equation
1,202,364,138.30 : 1,803,546,207.45 = 718,634,730.30 : x - Step 2: Convert to fraction form
1,202,364,138.30/1,803,546,207.45 = 718,634,730.30/x - Step 3: Cross multiply
1,202,364,138.30x = 1,803,546,207.45 × 718,634,730.30 - Step 4: Simplify right side
1,202,364,138.30x = 1,296,090,942,374,418,432 - Step 5: Solve for x
x = 1,296,090,942,374,418,432/1,202,364,138.30 - Step 6: Final answer
x = 1,077,952,095.45
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1.5x scale
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.