Finding the Fourth Proportional to 921,378,548.40, 1,264,734,243.66 and 814,617,956.40
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Solution
The fourth proportional to 921,378,548.40, 1,264,734,243.66 and 814,617,956.40 is: 1,118,188,855.98
Step by Step Solution
- Step 1: Write the proportion equation
921,378,548.40 : 1,264,734,243.66 = 814,617,956.40 : x - Step 2: Convert to fraction form
921,378,548.40/1,264,734,243.66 = 814,617,956.40/x - Step 3: Cross multiply
921,378,548.40x = 1,264,734,243.66 × 814,617,956.40 - Step 4: Simplify right side
921,378,548.40x = 1,030,275,224,959,408,896 - Step 5: Solve for x
x = 1,030,275,224,959,408,896/921,378,548.40 - Step 6: Final answer
x = 1,118,188,855.98
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.