Finding the Fourth Proportional to 1,246,334,978.20, 1,869,502,467.30 and 519,229,211.80
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Solution
The fourth proportional to 1,246,334,978.20, 1,869,502,467.30 and 519,229,211.80 is: 778,843,817.70
Step by Step Solution
- Step 1: Write the proportion equation
1,246,334,978.20 : 1,869,502,467.30 = 519,229,211.80 : x - Step 2: Convert to fraction form
1,246,334,978.20/1,869,502,467.30 = 519,229,211.80/x - Step 3: Cross multiply
1,246,334,978.20x = 1,869,502,467.30 × 519,229,211.80 - Step 4: Simplify right side
1,246,334,978.20x = 970,700,292,554,334,208 - Step 5: Solve for x
x = 970,700,292,554,334,208/1,246,334,978.20 - Step 6: Final answer
x = 778,843,817.70
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.