Finding the Fourth Proportional to 1,020,220.80, 1,530,331.20 and 310,247.70
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Solution
The fourth proportional to 1,020,220.80, 1,530,331.20 and 310,247.70 is: 465,371.55
Step by Step Solution
- Step 1: Write the proportion equation
1,020,220.80 : 1,530,331.20 = 310,247.70 : x - Step 2: Convert to fraction form
1,020,220.80/1,530,331.20 = 310,247.70/x - Step 3: Cross multiply
1,020,220.80x = 1,530,331.20 × 310,247.70 - Step 4: Simplify right side
1,020,220.80x = 474,781,735,038.24 - Step 5: Solve for x
x = 474,781,735,038.24/1,020,220.80 - Step 6: Final answer
x = 465,371.55
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Double scale
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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.