Finding the Fourth Proportional to 7,122,951,673.20, 9,829,637,100 and 3,951,102,751.92
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Solution
The fourth proportional to 7,122,951,673.20, 9,829,637,100 and 3,951,102,751.92 is: 5,452,501,712.50
Step by Step Solution
- Step 1: Write the proportion equation
7,122,951,673.20 : 9,829,637,100 = 3,951,102,751.92 : x - Step 2: Convert to fraction form
7,122,951,673.20/9,829,637,100 = 3,951,102,751.92/x - Step 3: Cross multiply
7,122,951,673.20x = 9,829,637,100 × 3,951,102,751.92 - Step 4: Simplify right side
7,122,951,673.20x = 38,837,906,196,184,932,352 - Step 5: Solve for x
x = 38,837,906,196,184,932,352/7,122,951,673.20 - Step 6: Final answer
x = 5,452,501,712.50
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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.