Finding the Fourth Proportional to 1,078,643,865.87, 1,488,104,988.35 and 626,444,852.49
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Solution
The fourth proportional to 1,078,643,865.87, 1,488,104,988.35 and 626,444,852.49 is: 864,247,912.97
Step by Step Solution
- Step 1: Write the proportion equation
1,078,643,865.87 : 1,488,104,988.35 = 626,444,852.49 : x - Step 2: Convert to fraction form
1,078,643,865.87/1,488,104,988.35 = 626,444,852.49/x - Step 3: Cross multiply
1,078,643,865.87x = 1,488,104,988.35 × 626,444,852.49 - Step 4: Simplify right side
1,078,643,865.87x = 932,215,709,913,416,704 - Step 5: Solve for x
x = 932,215,709,913,416,704/1,078,643,865.87 - Step 6: Final answer
x = 864,247,912.97
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.