Finding the Fourth Proportional to 1,225,865,574.24, 1,691,730,218.52 and 668,984,490.96
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Solution
The fourth proportional to 1,225,865,574.24, 1,691,730,218.52 and 668,984,490.96 is: 923,218,094.10
Step by Step Solution
- Step 1: Write the proportion equation
1,225,865,574.24 : 1,691,730,218.52 = 668,984,490.96 : x - Step 2: Convert to fraction form
1,225,865,574.24/1,691,730,218.52 = 668,984,490.96/x - Step 3: Cross multiply
1,225,865,574.24x = 1,691,730,218.52 × 668,984,490.96 - Step 4: Simplify right side
1,225,865,574.24x = 1,131,741,279,078,251,776 - Step 5: Solve for x
x = 1,131,741,279,078,251,776/1,225,865,574.24 - Step 6: Final answer
x = 923,218,094.10
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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.