Finding the Fourth Proportional to 1,953,344,117.20, 2,930,016,175.80 and 660,879,605.20
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Solution
The fourth proportional to 1,953,344,117.20, 2,930,016,175.80 and 660,879,605.20 is: 991,319,407.80
Step by Step Solution
- Step 1: Write the proportion equation
1,953,344,117.20 : 2,930,016,175.80 = 660,879,605.20 : x - Step 2: Convert to fraction form
1,953,344,117.20/2,930,016,175.80 = 660,879,605.20/x - Step 3: Cross multiply
1,953,344,117.20x = 2,930,016,175.80 × 660,879,605.20 - Step 4: Simplify right side
1,953,344,117.20x = 1,936,387,933,492,317,952 - Step 5: Solve for x
x = 1,936,387,933,492,317,952/1,953,344,117.20 - Step 6: Final answer
x = 991,319,407.80
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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.