Finding the Fourth Proportional to 503,889.80, 695,341.68 and 312,899.09
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Solution
The fourth proportional to 503,889.80, 695,341.68 and 312,899.09 is: 431,784.45
Step by Step Solution
- Step 1: Write the proportion equation
503,889.80 : 695,341.68 = 312,899.09 : x - Step 2: Convert to fraction form
503,889.80/695,341.68 = 312,899.09/x - Step 3: Cross multiply
503,889.80x = 695,341.68 × 312,899.09 - Step 4: Simplify right side
503,889.80x = 217,571,778,911.07 - Step 5: Solve for x
x = 217,571,778,911.07/503,889.80 - Step 6: Final answer
x = 431,784.45
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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.