Finding the Fourth Proportional to 612,815.84, 845,625.12 and 383,328.80
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Solution
The fourth proportional to 612,815.84, 845,625.12 and 383,328.80 is: 528,955.75
Step by Step Solution
- Step 1: Write the proportion equation
612,815.84 : 845,625.12 = 383,328.80 : x - Step 2: Convert to fraction form
612,815.84/845,625.12 = 383,328.80/x - Step 3: Cross multiply
612,815.84x = 845,625.12 × 383,328.80 - Step 4: Simplify right side
612,815.84x = 324,152,462,499.46 - Step 5: Solve for x
x = 324,152,462,499.46/612,815.84 - Step 6: Final answer
x = 528,955.75
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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.