Finding the Fourth Proportional to 921,461,842.80, 1,382,192,764.20 and 307,966,352.40
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Solution
The fourth proportional to 921,461,842.80, 1,382,192,764.20 and 307,966,352.40 is: 461,949,528.60
Step by Step Solution
- Step 1: Write the proportion equation
921,461,842.80 : 1,382,192,764.20 = 307,966,352.40 : x - Step 2: Convert to fraction form
921,461,842.80/1,382,192,764.20 = 307,966,352.40/x - Step 3: Cross multiply
921,461,842.80x = 1,382,192,764.20 × 307,966,352.40 - Step 4: Simplify right side
921,461,842.80x = 425,668,863,904,347,264 - Step 5: Solve for x
x = 425,668,863,904,347,264/921,461,842.80 - Step 6: Final answer
x = 461,949,528.60
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Double scale
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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.