Finding the Fourth Proportional to 489,681.18, 734,271.71 and 287,671.84
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Solution
The fourth proportional to 489,681.18, 734,271.71 and 287,671.84 is: 431,360.85
Step by Step Solution
- Step 1: Write the proportion equation
489,681.18 : 734,271.71 = 287,671.84 : x - Step 2: Convert to fraction form
489,681.18/734,271.71 = 287,671.84/x - Step 3: Cross multiply
489,681.18x = 734,271.71 × 287,671.84 - Step 4: Simplify right side
489,681.18x = 211,229,290,601.61 - Step 5: Solve for x
x = 211,229,290,601.61/489,681.18 - Step 6: Final answer
x = 431,360.85
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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.