Finding the Fourth Proportional to 612,219.70, 917,564.10 and 312,819.40
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Solution
The fourth proportional to 612,219.70, 917,564.10 and 312,819.40 is: 468,837.99
Step by Step Solution
- Step 1: Write the proportion equation
612,219.70 : 917,564.10 = 312,819.40 : x - Step 2: Convert to fraction form
612,219.70/917,564.10 = 312,819.40/x - Step 3: Cross multiply
612,219.70x = 917,564.10 × 312,819.40 - Step 4: Simplify right side
612,219.70x = 287,031,851,223.54 - Step 5: Solve for x
x = 287,031,851,223.54/612,219.70 - Step 6: Final answer
x = 468,837.99
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1.5x scale
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.