Finding the Fourth Proportional to 644,215.84, 889,047.45 and 357,737.05
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Solution
The fourth proportional to 644,215.84, 889,047.45 and 357,737.05 is: 493,693.56
Step by Step Solution
- Step 1: Write the proportion equation
644,215.84 : 889,047.45 = 357,737.05 : x - Step 2: Convert to fraction form
644,215.84/889,047.45 = 357,737.05/x - Step 3: Cross multiply
644,215.84x = 889,047.45 × 357,737.05 - Step 4: Simplify right side
644,215.84x = 318,045,212,073.02 - Step 5: Solve for x
x = 318,045,212,073.02/644,215.84 - Step 6: Final answer
x = 493,693.56
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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.