Finding the Fourth Proportional to 7,720,587.99, 10,655,688.78 and 4,283,936.19
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Solution
The fourth proportional to 7,720,587.99, 10,655,688.78 and 4,283,936.19 is: 5,912,540.71
Step by Step Solution
- Step 1: Write the proportion equation
7,720,587.99 : 10,655,688.78 = 4,283,936.19 : x - Step 2: Convert to fraction form
7,720,587.99/10,655,688.78 = 4,283,936.19/x - Step 3: Cross multiply
7,720,587.99x = 10,655,688.78 × 4,283,936.19 - Step 4: Simplify right side
7,720,587.99x = 45,648,290,794,018.95 - Step 5: Solve for x
x = 45,648,290,794,018.95/7,720,587.99 - Step 6: Final answer
x = 5,912,540.71
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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.