Finding the Fourth Proportional to 812,051,928.19, 1,120,602,660.68 and 459,620,351.44
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Solution
The fourth proportional to 812,051,928.19, 1,120,602,660.68 and 459,620,351.44 is: 634,259,670.90
Step by Step Solution
- Step 1: Write the proportion equation
812,051,928.19 : 1,120,602,660.68 = 459,620,351.44 : x - Step 2: Convert to fraction form
812,051,928.19/1,120,602,660.68 = 459,620,351.44/x - Step 3: Cross multiply
812,051,928.19x = 1,120,602,660.68 × 459,620,351.44 - Step 4: Simplify right side
812,051,928.19x = 515,051,788,724,688,192 - Step 5: Solve for x
x = 515,051,788,724,688,192/812,051,928.19 - Step 6: Final answer
x = 634,259,670.90
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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.