Finding the Fourth Proportional to 905,420.36, 1,249,406.96 and 523,471.74
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Solution
The fourth proportional to 905,420.36, 1,249,406.96 and 523,471.74 is: 722,348.72
Step by Step Solution
- Step 1: Write the proportion equation
905,420.36 : 1,249,406.96 = 523,471.74 : x - Step 2: Convert to fraction form
905,420.36/1,249,406.96 = 523,471.74/x - Step 3: Cross multiply
905,420.36x = 1,249,406.96 × 523,471.74 - Step 4: Simplify right side
905,420.36x = 654,029,235,319.31 - Step 5: Solve for x
x = 654,029,235,319.31/905,420.36 - Step 6: Final answer
x = 722,348.72
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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.