Finding the Fourth Proportional to 1,040,045,563.20, 1,560,068,344.80 and 349,723,387.20
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Solution
The fourth proportional to 1,040,045,563.20, 1,560,068,344.80 and 349,723,387.20 is: 524,585,080.80
Step by Step Solution
- Step 1: Write the proportion equation
1,040,045,563.20 : 1,560,068,344.80 = 349,723,387.20 : x - Step 2: Convert to fraction form
1,040,045,563.20/1,560,068,344.80 = 349,723,387.20/x - Step 3: Cross multiply
1,040,045,563.20x = 1,560,068,344.80 × 349,723,387.20 - Step 4: Simplify right side
1,040,045,563.20x = 545,592,385,806,953,472 - Step 5: Solve for x
x = 545,592,385,806,953,472/1,040,045,563.20 - Step 6: Final answer
x = 524,585,080.80
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Half scale
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Double scale
Find fourth proportional to 1,040,045,564.20, 1,560,068,346.30 and 349,723,388.20
Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.