Finding the Fourth Proportional to 1,299,307,154.40, 1,948,960,731.60 and 993,197,138.40
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Solution
The fourth proportional to 1,299,307,154.40, 1,948,960,731.60 and 993,197,138.40 is: 1,489,795,707.60
Step by Step Solution
- Step 1: Write the proportion equation
1,299,307,154.40 : 1,948,960,731.60 = 993,197,138.40 : x - Step 2: Convert to fraction form
1,299,307,154.40/1,948,960,731.60 = 993,197,138.40/x - Step 3: Cross multiply
1,299,307,154.40x = 1,948,960,731.60 × 993,197,138.40 - Step 4: Simplify right side
1,299,307,154.40x = 1,935,702,221,479,090,432 - Step 5: Solve for x
x = 1,935,702,221,479,090,432/1,299,307,154.40 - Step 6: Final answer
x = 1,489,795,707.60
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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.