Finding the Fourth Proportional to 905,625.13, 1,249,790.79 and 497,719.57
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Solution
The fourth proportional to 905,625.13, 1,249,790.79 and 497,719.57 is: 686,868.46
Step by Step Solution
- Step 1: Write the proportion equation
905,625.13 : 1,249,790.79 = 497,719.57 : x - Step 2: Convert to fraction form
905,625.13/1,249,790.79 = 497,719.57/x - Step 3: Cross multiply
905,625.13x = 1,249,790.79 × 497,719.57 - Step 4: Simplify right side
905,625.13x = 622,045,334,588.76 - Step 5: Solve for x
x = 622,045,334,588.76/905,625.13 - Step 6: Final answer
x = 686,868.46
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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.