Finding the Fourth Proportional to 912,355.20, 1,368,532.80 and 539,107.20
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Solution
The fourth proportional to 912,355.20, 1,368,532.80 and 539,107.20 is: 808,660.80
Step by Step Solution
- Step 1: Write the proportion equation
912,355.20 : 1,368,532.80 = 539,107.20 : x - Step 2: Convert to fraction form
912,355.20/1,368,532.80 = 539,107.20/x - Step 3: Cross multiply
912,355.20x = 1,368,532.80 × 539,107.20 - Step 4: Simplify right side
912,355.20x = 737,785,885,916.16 - Step 5: Solve for x
x = 737,785,885,916.16/912,355.20 - Step 6: Final answer
x = 808,660.80
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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.