Finding the Fourth Proportional to 1,126,521.36, 1,554,566.04 and 643,074.48
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Solution
The fourth proportional to 1,126,521.36, 1,554,566.04 and 643,074.48 is: 887,423.70
Step by Step Solution
- Step 1: Write the proportion equation
1,126,521.36 : 1,554,566.04 = 643,074.48 : x - Step 2: Convert to fraction form
1,126,521.36/1,554,566.04 = 643,074.48/x - Step 3: Cross multiply
1,126,521.36x = 1,554,566.04 × 643,074.48 - Step 4: Simplify right side
1,126,521.36x = 999,701,747,798.66 - Step 5: Solve for x
x = 999,701,747,798.66/1,126,521.36 - Step 6: Final answer
x = 887,423.70
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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.