Finding the Fourth Proportional to 390,786.95, 586,272.57 and 311,126.09
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Solution
The fourth proportional to 390,786.95, 586,272.57 and 311,126.09 is: 466,762.50
Step by Step Solution
- Step 1: Write the proportion equation
390,786.95 : 586,272.57 = 311,126.09 : x - Step 2: Convert to fraction form
390,786.95/586,272.57 = 311,126.09/x - Step 3: Cross multiply
390,786.95x = 586,272.57 × 311,126.09 - Step 4: Simplify right side
390,786.95x = 182,404,692,378.35 - Step 5: Solve for x
x = 182,404,692,378.35/390,786.95 - Step 6: Final answer
x = 466,762.50
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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.