Finding the Fourth Proportional to 986,683.21, 1,361,622.90 and 533,974.21
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Solution
The fourth proportional to 986,683.21, 1,361,622.90 and 533,974.21 is: 736,884.45
Step by Step Solution
- Step 1: Write the proportion equation
986,683.21 : 1,361,622.90 = 533,974.21 : x - Step 2: Convert to fraction form
986,683.21/1,361,622.90 = 533,974.21/x - Step 3: Cross multiply
986,683.21x = 1,361,622.90 × 533,974.21 - Step 4: Simplify right side
986,683.21x = 727,071,512,345.41 - Step 5: Solve for x
x = 727,071,512,345.41/986,683.21 - Step 6: Final answer
x = 736,884.45
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1.5x scale
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.