Finding the Fourth Proportional to 755,909,087.70, 1,133,863,631.55 and 210,650,621.70
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Solution
The fourth proportional to 755,909,087.70, 1,133,863,631.55 and 210,650,621.70 is: 315,975,932.55
Step by Step Solution
- Step 1: Write the proportion equation
755,909,087.70 : 1,133,863,631.55 = 210,650,621.70 : x - Step 2: Convert to fraction form
755,909,087.70/1,133,863,631.55 = 210,650,621.70/x - Step 3: Cross multiply
755,909,087.70x = 1,133,863,631.55 × 210,650,621.70 - Step 4: Simplify right side
755,909,087.70x = 238,849,078,909,027,200 - Step 5: Solve for x
x = 238,849,078,909,027,200/755,909,087.70 - Step 6: Final answer
x = 315,975,932.55
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1.5x scale
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.