Finding the Fourth Proportional to 402,403.80, 603,605.70 and 309,091.80
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Solution
The fourth proportional to 402,403.80, 603,605.70 and 309,091.80 is: 463,637.70
Step by Step Solution
- Step 1: Write the proportion equation
402,403.80 : 603,605.70 = 309,091.80 : x - Step 2: Convert to fraction form
402,403.80/603,605.70 = 309,091.80/x - Step 3: Cross multiply
402,403.80x = 603,605.70 × 309,091.80 - Step 4: Simplify right side
402,403.80x = 186,569,572,303.26 - Step 5: Solve for x
x = 186,569,572,303.26/402,403.80 - Step 6: Final answer
x = 463,637.70
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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.