Finding the Fourth Proportional to 520,090.10, 780,135.15 and 460,603.70
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Solution
The fourth proportional to 520,090.10, 780,135.15 and 460,603.70 is: 690,905.55
Step by Step Solution
- Step 1: Write the proportion equation
520,090.10 : 780,135.15 = 460,603.70 : x - Step 2: Convert to fraction form
520,090.10/780,135.15 = 460,603.70/x - Step 3: Cross multiply
520,090.10x = 780,135.15 × 460,603.70 - Step 4: Simplify right side
520,090.10x = 359,333,136,590.06 - Step 5: Solve for x
x = 359,333,136,590.06/520,090.10 - Step 6: Final answer
x = 690,905.55
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Similar ratio
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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.