Finding the Fourth Proportional to 489,115.40, 732,506.70 and 489,115.40
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Solution
The fourth proportional to 489,115.40, 732,506.70 and 489,115.40 is: 732,506.70
Step by Step Solution
- Step 1: Write the proportion equation
489,115.40 : 732,506.70 = 489,115.40 : x - Step 2: Convert to fraction form
489,115.40/732,506.70 = 489,115.40/x - Step 3: Cross multiply
489,115.40x = 732,506.70 × 489,115.40 - Step 4: Simplify right side
489,115.40x = 358,280,307,573.18 - Step 5: Solve for x
x = 358,280,307,573.18/489,115.40 - Step 6: Final answer
x = 732,506.70
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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.