Finding the Fourth Proportional to 1,578,946,711.95, 2,178,860,138.60 and 864,344,024.55
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Solution
The fourth proportional to 1,578,946,711.95, 2,178,860,138.60 and 864,344,024.55 is: 1,192,747,498.62
Step by Step Solution
- Step 1: Write the proportion equation
1,578,946,711.95 : 2,178,860,138.60 = 864,344,024.55 : x - Step 2: Convert to fraction form
1,578,946,711.95/2,178,860,138.60 = 864,344,024.55/x - Step 3: Cross multiply
1,578,946,711.95x = 2,178,860,138.60 × 864,344,024.55 - Step 4: Simplify right side
1,578,946,711.95x = 1,883,284,741,124,772,864 - Step 5: Solve for x
x = 1,883,284,741,124,772,864/1,578,946,711.95 - Step 6: Final answer
x = 1,192,747,498.62
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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.