Finding the Fourth Proportional to 664,985.70, 997,478.55 and 455,033.70
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Solution
The fourth proportional to 664,985.70, 997,478.55 and 455,033.70 is: 682,550.55
Step by Step Solution
- Step 1: Write the proportion equation
664,985.70 : 997,478.55 = 455,033.70 : x - Step 2: Convert to fraction form
664,985.70/997,478.55 = 455,033.70/x - Step 3: Cross multiply
664,985.70x = 997,478.55 × 455,033.70 - Step 4: Simplify right side
664,985.70x = 453,886,355,277.14 - Step 5: Solve for x
x = 453,886,355,277.14/664,985.70 - Step 6: Final answer
x = 682,550.55
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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.