Finding the Fourth Proportional to 697,728,052.80, 1,046,592,079.20 and 212,990,875.20
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Solution
The fourth proportional to 697,728,052.80, 1,046,592,079.20 and 212,990,875.20 is: 319,486,312.80
Step by Step Solution
- Step 1: Write the proportion equation
697,728,052.80 : 1,046,592,079.20 = 212,990,875.20 : x - Step 2: Convert to fraction form
697,728,052.80/1,046,592,079.20 = 212,990,875.20/x - Step 3: Cross multiply
697,728,052.80x = 1,046,592,079.20 × 212,990,875.20 - Step 4: Simplify right side
697,728,052.80x = 222,914,562,926,195,712 - Step 5: Solve for x
x = 222,914,562,926,195,712/697,728,052.80 - Step 6: Final answer
x = 319,486,312.80
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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.