Finding the Fourth Proportional to 787,251,516.53, 1,180,420,414.74 and 372,724,857.75
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Solution
The fourth proportional to 787,251,516.53, 1,180,420,414.74 and 372,724,857.75 is: 558,870,985.88
Step by Step Solution
- Step 1: Write the proportion equation
787,251,516.53 : 1,180,420,414.74 = 372,724,857.75 : x - Step 2: Convert to fraction form
787,251,516.53/1,180,420,414.74 = 372,724,857.75/x - Step 3: Cross multiply
787,251,516.53x = 1,180,420,414.74 × 372,724,857.75 - Step 4: Simplify right side
787,251,516.53x = 439,972,031,173,577,280 - Step 5: Solve for x
x = 439,972,031,173,577,280/787,251,516.53 - Step 6: Final answer
x = 558,870,985.88
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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.