Finding the Fourth Proportional to 1,148,945,911.68, 1,723,660,986.24 and 372,531,029.76
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Solution
The fourth proportional to 1,148,945,911.68, 1,723,660,986.24 and 372,531,029.76 is: 558,875,048.54
Step by Step Solution
- Step 1: Write the proportion equation
1,148,945,911.68 : 1,723,660,986.24 = 372,531,029.76 : x - Step 2: Convert to fraction form
1,148,945,911.68/1,723,660,986.24 = 372,531,029.76/x - Step 3: Cross multiply
1,148,945,911.68x = 1,723,660,986.24 × 372,531,029.76 - Step 4: Simplify right side
1,148,945,911.68x = 642,117,202,161,124,352 - Step 5: Solve for x
x = 642,117,202,161,124,352/1,148,945,911.68 - Step 6: Final answer
x = 558,875,048.54
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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.