Finding the Fourth Proportional to 1,681,157.74, 2,319,995.40 and 917,211.31
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Solution
The fourth proportional to 1,681,157.74, 2,319,995.40 and 917,211.31 is: 1,265,750.36
Step by Step Solution
- Step 1: Write the proportion equation
1,681,157.74 : 2,319,995.40 = 917,211.31 : x - Step 2: Convert to fraction form
1,681,157.74/2,319,995.40 = 917,211.31/x - Step 3: Cross multiply
1,681,157.74x = 2,319,995.40 × 917,211.31 - Step 4: Simplify right side
1,681,157.74x = 2,127,926,020,027.97 - Step 5: Solve for x
x = 2,127,926,020,027.97/1,681,157.74 - Step 6: Final answer
x = 1,265,750.36
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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.