Finding the Fourth Proportional to 1,201,139.81, 1,655,552.80 and 910,655.18
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Solution
The fourth proportional to 1,201,139.81, 1,655,552.80 and 910,655.18 is: 1,255,172.56
Step by Step Solution
- Step 1: Write the proportion equation
1,201,139.81 : 1,655,552.80 = 910,655.18 : x - Step 2: Convert to fraction form
1,201,139.81/1,655,552.80 = 910,655.18/x - Step 3: Cross multiply
1,201,139.81x = 1,655,552.80 × 910,655.18 - Step 4: Simplify right side
1,201,139.81x = 1,507,637,733,083.50 - Step 5: Solve for x
x = 1,507,637,733,083.50/1,201,139.81 - Step 6: Final answer
x = 1,255,172.56
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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.