Finding the Fourth Proportional to 644,426.62, 889,191.47 and 372,394.80
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Solution
The fourth proportional to 644,426.62, 889,191.47 and 372,394.80 is: 513,837.06
Step by Step Solution
- Step 1: Write the proportion equation
644,426.62 : 889,191.47 = 372,394.80 : x - Step 2: Convert to fraction form
644,426.62/889,191.47 = 372,394.80/x - Step 3: Cross multiply
644,426.62x = 889,191.47 × 372,394.80 - Step 4: Simplify right side
644,426.62x = 331,130,280,563.34 - Step 5: Solve for x
x = 331,130,280,563.34/644,426.62 - Step 6: Final answer
x = 513,837.06
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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.