Finding the Fourth Proportional to 628,448,838.06, 867,194,153.70 and 387,006,431.28
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Solution
The fourth proportional to 628,448,838.06, 867,194,153.70 and 387,006,431.28 is: 534,028,697.84
Step by Step Solution
- Step 1: Write the proportion equation
628,448,838.06 : 867,194,153.70 = 387,006,431.28 : x - Step 2: Convert to fraction form
628,448,838.06/867,194,153.70 = 387,006,431.28/x - Step 3: Cross multiply
628,448,838.06x = 867,194,153.70 × 387,006,431.28 - Step 4: Simplify right side
628,448,838.06x = 335,609,714,650,316,800 - Step 5: Solve for x
x = 335,609,714,650,316,800/628,448,838.06 - Step 6: Final answer
x = 534,028,697.84
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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.