Finding the Fourth Proportional to 421,578,938.24, 632,584,585.44 and 203,415,336.80
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Solution
The fourth proportional to 421,578,938.24, 632,584,585.44 and 203,415,336.80 is: 305,227,312.92
Step by Step Solution
- Step 1: Write the proportion equation
421,578,938.24 : 632,584,585.44 = 203,415,336.80 : x - Step 2: Convert to fraction form
421,578,938.24/632,584,585.44 = 203,415,336.80/x - Step 3: Cross multiply
421,578,938.24x = 632,584,585.44 × 203,415,336.80 - Step 4: Simplify right side
421,578,938.24x = 128,677,406,501,766,000 - Step 5: Solve for x
x = 128,677,406,501,766,000/421,578,938.24 - Step 6: Final answer
x = 305,227,312.92
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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.