Finding the Fourth Proportional to 1,246,334,993.70, 1,869,502,490.55 and 519,229,227.30
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Solution
The fourth proportional to 1,246,334,993.70, 1,869,502,490.55 and 519,229,227.30 is: 778,843,840.95
Step by Step Solution
- Step 1: Write the proportion equation
1,246,334,993.70 : 1,869,502,490.55 = 519,229,227.30 : x - Step 2: Convert to fraction form
1,246,334,993.70/1,869,502,490.55 = 519,229,227.30/x - Step 3: Cross multiply
1,246,334,993.70x = 1,869,502,490.55 × 519,229,227.30 - Step 4: Simplify right side
1,246,334,993.70x = 970,700,333,603,702,016 - Step 5: Solve for x
x = 970,700,333,603,702,016/1,246,334,993.70 - Step 6: Final answer
x = 778,843,840.95
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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.