Finding the Fourth Proportional to 1,987,381.68, 2,740,681.08 and 1,335,480.72
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Solution
The fourth proportional to 1,987,381.68, 2,740,681.08 and 1,335,480.72 is: 1,841,682.84
Step by Step Solution
- Step 1: Write the proportion equation
1,987,381.68 : 2,740,681.08 = 1,335,480.72 : x - Step 2: Convert to fraction form
1,987,381.68/2,740,681.08 = 1,335,480.72/x - Step 3: Cross multiply
1,987,381.68x = 2,740,681.08 × 1,335,480.72 - Step 4: Simplify right side
1,987,381.68x = 3,660,126,742,008.78 - Step 5: Solve for x
x = 3,660,126,742,008.78/1,987,381.68 - Step 6: Final answer
x = 1,841,682.84
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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.