Finding the Fourth Proportional to 1,246,334,983.20, 1,869,502,474.80 and 519,229,216.80
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Solution
The fourth proportional to 1,246,334,983.20, 1,869,502,474.80 and 519,229,216.80 is: 778,843,825.20
Step by Step Solution
- Step 1: Write the proportion equation
1,246,334,983.20 : 1,869,502,474.80 = 519,229,216.80 : x - Step 2: Convert to fraction form
1,246,334,983.20/1,869,502,474.80 = 519,229,216.80/x - Step 3: Cross multiply
1,246,334,983.20x = 1,869,502,474.80 × 519,229,216.80 - Step 4: Simplify right side
1,246,334,983.20x = 970,700,305,796,065,792 - Step 5: Solve for x
x = 970,700,305,796,065,792/1,246,334,983.20 - Step 6: Final answer
x = 778,843,825.20
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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.