Finding the Fourth Proportional to 1,152,431.40, 1,590,380.79 and 636,184.07
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Solution
The fourth proportional to 1,152,431.40, 1,590,380.79 and 636,184.07 is: 877,948.07
Step by Step Solution
- Step 1: Write the proportion equation
1,152,431.40 : 1,590,380.79 = 636,184.07 : x - Step 2: Convert to fraction form
1,152,431.40/1,590,380.79 = 636,184.07/x - Step 3: Cross multiply
1,152,431.40x = 1,590,380.79 × 636,184.07 - Step 4: Simplify right side
1,152,431.40x = 1,011,774,923,832.02 - Step 5: Solve for x
x = 1,011,774,923,832.02/1,152,431.40 - Step 6: Final answer
x = 877,948.07
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1.5x scale
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.