Finding the Fourth Proportional to 786,624,811.84, 1,085,542,346.61 and 434,200,869.07
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Solution
The fourth proportional to 786,624,811.84, 1,085,542,346.61 and 434,200,869.07 is: 599,197,257.98
Step by Step Solution
- Step 1: Write the proportion equation
786,624,811.84 : 1,085,542,346.61 = 434,200,869.07 : x - Step 2: Convert to fraction form
786,624,811.84/1,085,542,346.61 = 434,200,869.07/x - Step 3: Cross multiply
786,624,811.84x = 1,085,542,346.61 × 434,200,869.07 - Step 4: Simplify right side
786,624,811.84x = 471,343,430,310,349,120 - Step 5: Solve for x
x = 471,343,430,310,349,120/786,624,811.84 - Step 6: Final answer
x = 599,197,257.98
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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.