Finding the Fourth Proportional to 1,478,890.80, 2,217,461.40 and 770,302.80
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Solution
The fourth proportional to 1,478,890.80, 2,217,461.40 and 770,302.80 is: 1,154,998.55
Step by Step Solution
- Step 1: Write the proportion equation
1,478,890.80 : 2,217,461.40 = 770,302.80 : x - Step 2: Convert to fraction form
1,478,890.80/2,217,461.40 = 770,302.80/x - Step 3: Cross multiply
1,478,890.80x = 2,217,461.40 × 770,302.80 - Step 4: Simplify right side
1,478,890.80x = 1,708,116,725,311.92 - Step 5: Solve for x
x = 1,708,116,725,311.92/1,478,890.80 - Step 6: Final answer
x = 1,154,998.55
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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.