Finding the Fourth Proportional to 485,490.12, 670,263.39 and 431,626.08
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Solution
The fourth proportional to 485,490.12, 670,263.39 and 431,626.08 is: 595,899.17
Step by Step Solution
- Step 1: Write the proportion equation
485,490.12 : 670,263.39 = 431,626.08 : x - Step 2: Convert to fraction form
485,490.12/670,263.39 = 431,626.08/x - Step 3: Cross multiply
485,490.12x = 670,263.39 × 431,626.08 - Step 4: Simplify right side
485,490.12x = 289,303,159,593.21 - Step 5: Solve for x
x = 289,303,159,593.21/485,490.12 - Step 6: Final answer
x = 595,899.17
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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.