Finding the Fourth Proportional to 2,413,698,688.80, 3,619,697,727.60 and 861,040,663.20
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Solution
The fourth proportional to 2,413,698,688.80, 3,619,697,727.60 and 861,040,663.20 is: 1,291,257,664.60
Step by Step Solution
- Step 1: Write the proportion equation
2,413,698,688.80 : 3,619,697,727.60 = 861,040,663.20 : x - Step 2: Convert to fraction form
2,413,698,688.80/3,619,697,727.60 = 861,040,663.20/x - Step 3: Cross multiply
2,413,698,688.80x = 3,619,697,727.60 × 861,040,663.20 - Step 4: Simplify right side
2,413,698,688.80x = 3,116,706,931,956,236,800 - Step 5: Solve for x
x = 3,116,706,931,956,236,800/2,413,698,688.80 - Step 6: Final answer
x = 1,291,257,664.60
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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.