Finding the Fourth Proportional to 1,681,641.12, 2,316,721.68 and 1,171,420.32
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Solution
The fourth proportional to 1,681,641.12, 2,316,721.68 and 1,171,420.32 is: 1,613,813.33
Step by Step Solution
- Step 1: Write the proportion equation
1,681,641.12 : 2,316,721.68 = 1,171,420.32 : x - Step 2: Convert to fraction form
1,681,641.12/2,316,721.68 = 1,171,420.32/x - Step 3: Cross multiply
1,681,641.12x = 2,316,721.68 × 1,171,420.32 - Step 4: Simplify right side
1,681,641.12x = 2,713,854,851,736.54 - Step 5: Solve for x
x = 2,713,854,851,736.54/1,681,641.12 - Step 6: Final answer
x = 1,613,813.33
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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.