Finding the Fourth Proportional to 741,528,217.20, 1,112,292,325.80 and 431,166,673.20
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Solution
The fourth proportional to 741,528,217.20, 1,112,292,325.80 and 431,166,673.20 is: 646,750,009.80
Step by Step Solution
- Step 1: Write the proportion equation
741,528,217.20 : 1,112,292,325.80 = 431,166,673.20 : x - Step 2: Convert to fraction form
741,528,217.20/1,112,292,325.80 = 431,166,673.20/x - Step 3: Cross multiply
741,528,217.20x = 1,112,292,325.80 × 431,166,673.20 - Step 4: Simplify right side
741,528,217.20x = 479,583,381,741,076,480 - Step 5: Solve for x
x = 479,583,381,741,076,480/741,528,217.20 - Step 6: Final answer
x = 646,750,009.80
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1.5x scale
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.