Finding the Fourth Proportional to 664,355.70, 996,970.95 and 380,045.70
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Solution
The fourth proportional to 664,355.70, 996,970.95 and 380,045.70 is: 570,318.77
Step by Step Solution
- Step 1: Write the proportion equation
664,355.70 : 996,970.95 = 380,045.70 : x - Step 2: Convert to fraction form
664,355.70/996,970.95 = 380,045.70/x - Step 3: Cross multiply
664,355.70x = 996,970.95 × 380,045.70 - Step 4: Simplify right side
664,355.70x = 378,894,522,572.42 - Step 5: Solve for x
x = 378,894,522,572.42/664,355.70 - Step 6: Final answer
x = 570,318.77
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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.