Finding the Fourth Proportional to 390,623.12, 585,264.99 and 262,298.87
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Solution
The fourth proportional to 390,623.12, 585,264.99 and 262,298.87 is: 392,998.61
Step by Step Solution
- Step 1: Write the proportion equation
390,623.12 : 585,264.99 = 262,298.87 : x - Step 2: Convert to fraction form
390,623.12/585,264.99 = 262,298.87/x - Step 3: Cross multiply
390,623.12x = 585,264.99 × 262,298.87 - Step 4: Simplify right side
390,623.12x = 153,514,342,601.24 - Step 5: Solve for x
x = 153,514,342,601.24/390,623.12 - Step 6: Final answer
x = 392,998.61
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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.