Finding the Fourth Proportional to 781,257,849.44, 1,176,563,528.13 and 711,522,161.42
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Solution
The fourth proportional to 781,257,849.44, 1,176,563,528.13 and 711,522,161.42 is: 1,071,542,545.37
Step by Step Solution
- Step 1: Write the proportion equation
781,257,849.44 : 1,176,563,528.13 = 711,522,161.42 : x - Step 2: Convert to fraction form
781,257,849.44/1,176,563,528.13 = 711,522,161.42/x - Step 3: Cross multiply
781,257,849.44x = 1,176,563,528.13 × 711,522,161.42 - Step 4: Simplify right side
781,257,849.44x = 837,151,024,582,998,656 - Step 5: Solve for x
x = 837,151,024,582,998,656/781,257,849.44 - Step 6: Final answer
x = 1,071,542,545.37
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.