Finding the Fourth Proportional to 1,348,801,750.74, 1,861,919,540.79 and 840,415,642.87
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Solution
The fourth proportional to 1,348,801,750.74, 1,861,919,540.79 and 840,415,642.87 is: 1,160,130,691.54
Step by Step Solution
- Step 1: Write the proportion equation
1,348,801,750.74 : 1,861,919,540.79 = 840,415,642.87 : x - Step 2: Convert to fraction form
1,348,801,750.74/1,861,919,540.79 = 840,415,642.87/x - Step 3: Cross multiply
1,348,801,750.74x = 1,861,919,540.79 × 840,415,642.87 - Step 4: Simplify right side
1,348,801,750.74x = 1,564,786,307,835,933,440 - Step 5: Solve for x
x = 1,564,786,307,835,933,440/1,348,801,750.74 - Step 6: Final answer
x = 1,160,130,691.54
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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.