Finding the Fourth Proportional to 5,427,416.40, 8,142,305.40 and 1,640,800.40
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Solution
The fourth proportional to 5,427,416.40, 8,142,305.40 and 1,640,800.40 is: 2,461,557.58
Step by Step Solution
- Step 1: Write the proportion equation
5,427,416.40 : 8,142,305.40 = 1,640,800.40 : x - Step 2: Convert to fraction form
5,427,416.40/8,142,305.40 = 1,640,800.40/x - Step 3: Cross multiply
5,427,416.40x = 8,142,305.40 × 1,640,800.40 - Step 4: Simplify right side
5,427,416.40x = 13,359,897,957,242.16 - Step 5: Solve for x
x = 13,359,897,957,242.16/5,427,416.40 - Step 6: Final answer
x = 2,461,557.58
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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.