Finding the Fourth Proportional to 2,987,419.22, 4,122,619.64 and 1,698,259.68
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Solution
The fourth proportional to 2,987,419.22, 4,122,619.64 and 1,698,259.68 is: 2,343,587.62
Step by Step Solution
- Step 1: Write the proportion equation
2,987,419.22 : 4,122,619.64 = 1,698,259.68 : x - Step 2: Convert to fraction form
2,987,419.22/4,122,619.64 = 1,698,259.68/x - Step 3: Cross multiply
2,987,419.22x = 4,122,619.64 × 1,698,259.68 - Step 4: Simplify right side
2,987,419.22x = 7,001,278,710,588.12 - Step 5: Solve for x
x = 7,001,278,710,588.12/2,987,419.22 - Step 6: Final answer
x = 2,343,587.62
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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.