Finding the Fourth Proportional to 819,376,724.70, 1,229,065,087.05 and 805,771,835.10
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Solution
The fourth proportional to 819,376,724.70, 1,229,065,087.05 and 805,771,835.10 is: 1,208,657,752.65
Step by Step Solution
- Step 1: Write the proportion equation
819,376,724.70 : 1,229,065,087.05 = 805,771,835.10 : x - Step 2: Convert to fraction form
819,376,724.70/1,229,065,087.05 = 805,771,835.10/x - Step 3: Cross multiply
819,376,724.70x = 1,229,065,087.05 × 805,771,835.10 - Step 4: Simplify right side
819,376,724.70x = 990,346,030,649,619,712 - Step 5: Solve for x
x = 990,346,030,649,619,712/819,376,724.70 - Step 6: Final answer
x = 1,208,657,752.65
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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.