Finding the Fourth Proportional to 719,178.11, 992,489.62 and 392,508.95
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Solution
The fourth proportional to 719,178.11, 992,489.62 and 392,508.95 is: 541,675.36
Step by Step Solution
- Step 1: Write the proportion equation
719,178.11 : 992,489.62 = 392,508.95 : x - Step 2: Convert to fraction form
719,178.11/992,489.62 = 392,508.95/x - Step 3: Cross multiply
719,178.11x = 992,489.62 × 392,508.95 - Step 4: Simplify right side
719,178.11x = 389,561,058,632.10 - Step 5: Solve for x
x = 389,561,058,632.10/719,178.11 - Step 6: Final answer
x = 541,675.36
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1.5x scale
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.