Finding the Fourth Proportional to 993,414,721.80, 1,490,122,082.70 and 896,668,840.20
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Solution
The fourth proportional to 993,414,721.80, 1,490,122,082.70 and 896,668,840.20 is: 1,345,003,260.30
Step by Step Solution
- Step 1: Write the proportion equation
993,414,721.80 : 1,490,122,082.70 = 896,668,840.20 : x - Step 2: Convert to fraction form
993,414,721.80/1,490,122,082.70 = 896,668,840.20/x - Step 3: Cross multiply
993,414,721.80x = 1,490,122,082.70 × 896,668,840.20 - Step 4: Simplify right side
993,414,721.80x = 1,336,146,039,651,017,472 - Step 5: Solve for x
x = 1,336,146,039,651,017,472/993,414,721.80 - Step 6: Final answer
x = 1,345,003,260.30
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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.