Finding the Fourth Proportional to 390,789.95, 586,277.07 and 311,129.09
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Solution
The fourth proportional to 390,789.95, 586,277.07 and 311,129.09 is: 466,767.00
Step by Step Solution
- Step 1: Write the proportion equation
390,789.95 : 586,277.07 = 311,129.09 : x - Step 2: Convert to fraction form
390,789.95/586,277.07 = 311,129.09/x - Step 3: Cross multiply
390,789.95x = 586,277.07 × 311,129.09 - Step 4: Simplify right side
390,789.95x = 182,407,851,276.97 - Step 5: Solve for x
x = 182,407,851,276.97/390,789.95 - Step 6: Final answer
x = 466,767.00
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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.