Finding the Fourth Proportional to 1,126,568.68, 1,554,727.04 and 643,289.07
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Solution
The fourth proportional to 1,126,568.68, 1,554,727.04 and 643,289.07 is: 887,774.47
Step by Step Solution
- Step 1: Write the proportion equation
1,126,568.68 : 1,554,727.04 = 643,289.07 : x - Step 2: Convert to fraction form
1,126,568.68/1,554,727.04 = 643,289.07/x - Step 3: Cross multiply
1,126,568.68x = 1,554,727.04 × 643,289.07 - Step 4: Simplify right side
1,126,568.68x = 1,000,138,911,665.45 - Step 5: Solve for x
x = 1,000,138,911,665.45/1,126,568.68 - Step 6: Final answer
x = 887,774.47
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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.