Finding the Fourth Proportional to 561,471.78, 774,910.08 and 357,457.53
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Solution
The fourth proportional to 561,471.78, 774,910.08 and 357,457.53 is: 493,341.70
Step by Step Solution
- Step 1: Write the proportion equation
561,471.78 : 774,910.08 = 357,457.53 : x - Step 2: Convert to fraction form
561,471.78/774,910.08 = 357,457.53/x - Step 3: Cross multiply
561,471.78x = 774,910.08 × 357,457.53 - Step 4: Simplify right side
561,471.78x = 276,997,443,168.90 - Step 5: Solve for x
x = 276,997,443,168.90/561,471.78 - Step 6: Final answer
x = 493,341.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.