Finding the Fourth Proportional to 421,894,892.80, 582,159,739.36 and 243,285,378.02
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Solution
The fourth proportional to 421,894,892.80, 582,159,739.36 and 243,285,378.02 is: 335,701,983.29
Step by Step Solution
- Step 1: Write the proportion equation
421,894,892.80 : 582,159,739.36 = 243,285,378.02 : x - Step 2: Convert to fraction form
421,894,892.80/582,159,739.36 = 243,285,378.02/x - Step 3: Cross multiply
421,894,892.80x = 582,159,739.36 × 243,285,378.02 - Step 4: Simplify right side
421,894,892.80x = 141,630,952,254,095,040 - Step 5: Solve for x
x = 141,630,952,254,095,040/421,894,892.80 - Step 6: Final answer
x = 335,701,983.29
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.