Finding the Fourth Proportional to 657,311.63, 907,090.11 and 355,505.63
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Solution
The fourth proportional to 657,311.63, 907,090.11 and 355,505.63 is: 490,597.80
Step by Step Solution
- Step 1: Write the proportion equation
657,311.63 : 907,090.11 = 355,505.63 : x - Step 2: Convert to fraction form
657,311.63/907,090.11 = 355,505.63/x - Step 3: Cross multiply
657,311.63x = 907,090.11 × 355,505.63 - Step 4: Simplify right side
657,311.63x = 322,475,636,486.87 - Step 5: Solve for x
x = 322,475,636,486.87/657,311.63 - Step 6: Final answer
x = 490,597.80
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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.