Finding the Fourth Proportional to 19,413,643.60, 29,120,465.40 and 19,161,701.20
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Solution
The fourth proportional to 19,413,643.60, 29,120,465.40 and 19,161,701.20 is: 28,742,551.80
Step by Step Solution
- Step 1: Write the proportion equation
19,413,643.60 : 29,120,465.40 = 19,161,701.20 : x - Step 2: Convert to fraction form
19,413,643.60/29,120,465.40 = 19,161,701.20/x - Step 3: Cross multiply
19,413,643.60x = 29,120,465.40 × 19,161,701.20 - Step 4: Simplify right side
19,413,643.60x = 557,997,656,799,738.44 - Step 5: Solve for x
x = 557,997,656,799,738.44/19,413,643.60 - Step 6: Final answer
x = 28,742,551.80
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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.