Finding the Fourth Proportional to 785,216.25, 1,178,013.72 and 272,806.80
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Solution
The fourth proportional to 785,216.25, 1,178,013.72 and 272,806.80 is: 409,275.99
Step by Step Solution
- Step 1: Write the proportion equation
785,216.25 : 1,178,013.72 = 272,806.80 : x - Step 2: Convert to fraction form
785,216.25/1,178,013.72 = 272,806.80/x - Step 3: Cross multiply
785,216.25x = 1,178,013.72 × 272,806.80 - Step 4: Simplify right side
785,216.25x = 321,370,155,572.31 - Step 5: Solve for x
x = 321,370,155,572.31/785,216.25 - Step 6: Final answer
x = 409,275.99
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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.