Finding the Fourth Proportional to 910,342,871.20, 1,365,514,306.80 and 813,408,032.80
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Solution
The fourth proportional to 910,342,871.20, 1,365,514,306.80 and 813,408,032.80 is: 1,220,112,049.20
Step by Step Solution
- Step 1: Write the proportion equation
910,342,871.20 : 1,365,514,306.80 = 813,408,032.80 : x - Step 2: Convert to fraction form
910,342,871.20/1,365,514,306.80 = 813,408,032.80/x - Step 3: Cross multiply
910,342,871.20x = 1,365,514,306.80 × 813,408,032.80 - Step 4: Simplify right side
910,342,871.20x = 1,110,720,306,054,443,520 - Step 5: Solve for x
x = 1,110,720,306,054,443,520/910,342,871.20 - Step 6: Final answer
x = 1,220,112,049.20
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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.