Finding the Fourth Proportional to 1,348,801,750.23, 1,861,919,540.10 and 840,415,642.36
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Solution
The fourth proportional to 1,348,801,750.23, 1,861,919,540.10 and 840,415,642.36 is: 1,160,130,690.85
Step by Step Solution
- Step 1: Write the proportion equation
1,348,801,750.23 : 1,861,919,540.10 = 840,415,642.36 : x - Step 2: Convert to fraction form
1,348,801,750.23/1,861,919,540.10 = 840,415,642.36/x - Step 3: Cross multiply
1,348,801,750.23x = 1,861,919,540.10 × 840,415,642.36 - Step 4: Simplify right side
1,348,801,750.23x = 1,564,786,306,323,945,216 - Step 5: Solve for x
x = 1,564,786,306,323,945,216/1,348,801,750.23 - Step 6: Final answer
x = 1,160,130,690.85
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.