Finding the Fourth Proportional to 513,623.70, 770,435.55 and 478,631.70
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Solution
The fourth proportional to 513,623.70, 770,435.55 and 478,631.70 is: 717,947.55
Step by Step Solution
- Step 1: Write the proportion equation
513,623.70 : 770,435.55 = 478,631.70 : x - Step 2: Convert to fraction form
513,623.70/770,435.55 = 478,631.70/x - Step 3: Cross multiply
513,623.70x = 770,435.55 × 478,631.70 - Step 4: Simplify right side
513,623.70x = 368,754,877,036.94 - Step 5: Solve for x
x = 368,754,877,036.94/513,623.70 - Step 6: Final answer
x = 717,947.55
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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.