Finding the Fourth Proportional to 752,685.12, 1,038,703.80 and 413,146.08
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Solution
The fourth proportional to 752,685.12, 1,038,703.80 and 413,146.08 is: 570,140.68
Step by Step Solution
- Step 1: Write the proportion equation
752,685.12 : 1,038,703.80 = 413,146.08 : x - Step 2: Convert to fraction form
752,685.12/1,038,703.80 = 413,146.08/x - Step 3: Cross multiply
752,685.12x = 1,038,703.80 × 413,146.08 - Step 4: Simplify right side
752,685.12x = 429,136,403,251.10 - Step 5: Solve for x
x = 429,136,403,251.10/752,685.12 - Step 6: Final answer
x = 570,140.68
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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.