Finding the Fourth Proportional to 572,395.49, 789,866.21 and 317,726.63
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Solution
The fourth proportional to 572,395.49, 789,866.21 and 317,726.63 is: 438,440.78
Step by Step Solution
- Step 1: Write the proportion equation
572,395.49 : 789,866.21 = 317,726.63 : x - Step 2: Convert to fraction form
572,395.49/789,866.21 = 317,726.63/x - Step 3: Cross multiply
572,395.49x = 789,866.21 × 317,726.63 - Step 4: Simplify right side
572,395.49x = 250,961,527,465.54 - Step 5: Solve for x
x = 250,961,527,465.54/572,395.49 - Step 6: Final answer
x = 438,440.78
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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.