Finding the Fourth Proportional to 433,932,846.12, 651,121,818.30 and 212,599,970.28
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Solution
The fourth proportional to 433,932,846.12, 651,121,818.30 and 212,599,970.28 is: 319,008,990.58
Step by Step Solution
- Step 1: Write the proportion equation
433,932,846.12 : 651,121,818.30 = 212,599,970.28 : x - Step 2: Convert to fraction form
433,932,846.12/651,121,818.30 = 212,599,970.28/x - Step 3: Cross multiply
433,932,846.12x = 651,121,818.30 × 212,599,970.28 - Step 4: Simplify right side
433,932,846.12x = 138,428,479,219,239,552 - Step 5: Solve for x
x = 138,428,479,219,239,552/433,932,846.12 - Step 6: Final answer
x = 319,008,990.58
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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.