Finding the Fourth Proportional to 747,920.48, 1,121,256.21 and 348,355.58
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Solution
The fourth proportional to 747,920.48, 1,121,256.21 and 348,355.58 is: 522,242.49
Step by Step Solution
- Step 1: Write the proportion equation
747,920.48 : 1,121,256.21 = 348,355.58 : x - Step 2: Convert to fraction form
747,920.48/1,121,256.21 = 348,355.58/x - Step 3: Cross multiply
747,920.48x = 1,121,256.21 × 348,355.58 - Step 4: Simplify right side
747,920.48x = 390,595,857,363.15 - Step 5: Solve for x
x = 390,595,857,363.15/747,920.48 - Step 6: Final answer
x = 522,242.49
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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.