Finding the Fourth Proportional to 630,894.07, 870,945.98 and 389,309.68
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Solution
The fourth proportional to 630,894.07, 870,945.98 and 389,309.68 is: 537,439.99
Step by Step Solution
- Step 1: Write the proportion equation
630,894.07 : 870,945.98 = 389,309.68 : x - Step 2: Convert to fraction form
630,894.07/870,945.98 = 389,309.68/x - Step 3: Cross multiply
630,894.07x = 870,945.98 × 389,309.68 - Step 4: Simplify right side
630,894.07x = 339,067,700,771.09 - Step 5: Solve for x
x = 339,067,700,771.09/630,894.07 - Step 6: Final answer
x = 537,439.99
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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.