Finding the Fourth Proportional to 708,603,619.20, 1,062,905,428.80 and 611,668,780.80
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Solution
The fourth proportional to 708,603,619.20, 1,062,905,428.80 and 611,668,780.80 is: 917,503,171.20
Step by Step Solution
- Step 1: Write the proportion equation
708,603,619.20 : 1,062,905,428.80 = 611,668,780.80 : x - Step 2: Convert to fraction form
708,603,619.20/1,062,905,428.80 = 611,668,780.80/x - Step 3: Cross multiply
708,603,619.20x = 1,062,905,428.80 × 611,668,780.80 - Step 4: Simplify right side
708,603,619.20x = 650,146,067,739,797,120 - Step 5: Solve for x
x = 650,146,067,739,797,120/708,603,619.20 - Step 6: Final answer
x = 917,503,171.20
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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.