Finding the Fourth Proportional to 689,572.50, 951,618.81 and 379,510.79
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Solution
The fourth proportional to 689,572.50, 951,618.81 and 379,510.79 is: 523,729.70
Step by Step Solution
- Step 1: Write the proportion equation
689,572.50 : 951,618.81 = 379,510.79 : x - Step 2: Convert to fraction form
689,572.50/951,618.81 = 379,510.79/x - Step 3: Cross multiply
689,572.50x = 951,618.81 × 379,510.79 - Step 4: Simplify right side
689,572.50x = 361,149,601,603.87 - Step 5: Solve for x
x = 361,149,601,603.87/689,572.50 - Step 6: Final answer
x = 523,729.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.