Finding the Fourth Proportional to 905,491.88, 1,249,306.29 and 542,783.40
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Solution
The fourth proportional to 905,491.88, 1,249,306.29 and 542,783.40 is: 748,877.74
Step by Step Solution
- Step 1: Write the proportion equation
905,491.88 : 1,249,306.29 = 542,783.40 : x - Step 2: Convert to fraction form
905,491.88/1,249,306.29 = 542,783.40/x - Step 3: Cross multiply
905,491.88x = 1,249,306.29 × 542,783.40 - Step 4: Simplify right side
905,491.88x = 678,102,711,042.69 - Step 5: Solve for x
x = 678,102,711,042.69/905,491.88 - Step 6: Final answer
x = 748,877.74
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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.