Finding the Fourth Proportional to 390,859.40, 586,289.10 and 124,617.80
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Solution
The fourth proportional to 390,859.40, 586,289.10 and 124,617.80 is: 186,926.70
Step by Step Solution
- Step 1: Write the proportion equation
390,859.40 : 586,289.10 = 124,617.80 : x - Step 2: Convert to fraction form
390,859.40/586,289.10 = 124,617.80/x - Step 3: Cross multiply
390,859.40x = 586,289.10 × 124,617.80 - Step 4: Simplify right side
390,859.40x = 73,062,057,805.98 - Step 5: Solve for x
x = 73,062,057,805.98/390,859.40 - Step 6: Final answer
x = 186,926.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.