Finding the Fourth Proportional to 390,794.88, 539,538.84 and 299,976.96
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Solution
The fourth proportional to 390,794.88, 539,538.84 and 299,976.96 is: 414,153.89
Step by Step Solution
- Step 1: Write the proportion equation
390,794.88 : 539,538.84 = 299,976.96 : x - Step 2: Convert to fraction form
390,794.88/539,538.84 = 299,976.96/x - Step 3: Cross multiply
390,794.88x = 539,538.84 × 299,976.96 - Step 4: Simplify right side
390,794.88x = 161,849,221,025.13 - Step 5: Solve for x
x = 161,849,221,025.13/390,794.88 - Step 6: Final answer
x = 414,153.89
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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.