Finding the Fourth Proportional to 7,720,290.60, 10,655,278.74 and 4,283,638.80
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Solution
The fourth proportional to 7,720,290.60, 10,655,278.74 and 4,283,638.80 is: 5,912,130.49
Step by Step Solution
- Step 1: Write the proportion equation
7,720,290.60 : 10,655,278.74 = 4,283,638.80 : x - Step 2: Convert to fraction form
7,720,290.60/10,655,278.74 = 4,283,638.80/x - Step 3: Cross multiply
7,720,290.60x = 10,655,278.74 × 4,283,638.80 - Step 4: Simplify right side
7,720,290.60x = 45,643,365,435,479.11 - Step 5: Solve for x
x = 45,643,365,435,479.11/7,720,290.60 - Step 6: Final answer
x = 5,912,130.49
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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.