Finding the Fourth Proportional to 489,646.08, 733,639.68 and 390,113.28
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Solution
The fourth proportional to 489,646.08, 733,639.68 and 390,113.28 is: 584,509.08
Step by Step Solution
- Step 1: Write the proportion equation
489,646.08 : 733,639.68 = 390,113.28 : x - Step 2: Convert to fraction form
489,646.08/733,639.68 = 390,113.28/x - Step 3: Cross multiply
489,646.08x = 733,639.68 × 390,113.28 - Step 4: Simplify right side
489,646.08x = 286,202,581,902.95 - Step 5: Solve for x
x = 286,202,581,902.95/489,646.08 - Step 6: Final answer
x = 584,509.08
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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.