Finding the Fourth Proportional to 1,126,723.96, 1,554,726.90 and 643,258.36
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Solution
The fourth proportional to 1,126,723.96, 1,554,726.90 and 643,258.36 is: 887,609.66
Step by Step Solution
- Step 1: Write the proportion equation
1,126,723.96 : 1,554,726.90 = 643,258.36 : x - Step 2: Convert to fraction form
1,126,723.96/1,554,726.90 = 643,258.36/x - Step 3: Cross multiply
1,126,723.96x = 1,554,726.90 × 643,258.36 - Step 4: Simplify right side
1,126,723.96x = 1,000,091,075,941.88 - Step 5: Solve for x
x = 1,000,091,075,941.88/1,126,723.96 - Step 6: Final answer
x = 887,609.66
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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.