Finding the Fourth Proportional to 1,295,918,288.84, 1,787,708,392.01 and 787,145,614.01
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Solution
The fourth proportional to 1,295,918,288.84, 1,787,708,392.01 and 787,145,614.01 is: 1,085,860,761.45
Step by Step Solution
- Step 1: Write the proportion equation
1,295,918,288.84 : 1,787,708,392.01 = 787,145,614.01 : x - Step 2: Convert to fraction form
1,295,918,288.84/1,787,708,392.01 = 787,145,614.01/x - Step 3: Cross multiply
1,295,918,288.84x = 1,787,708,392.01 × 787,145,614.01 - Step 4: Simplify right side
1,295,918,288.84x = 1,407,186,819,899,541,248 - Step 5: Solve for x
x = 1,407,186,819,899,541,248/1,295,918,288.84 - Step 6: Final answer
x = 1,085,860,761.45
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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.