Finding the Fourth Proportional to 489,643.80, 734,465.70 and 371,545.80
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Solution
The fourth proportional to 489,643.80, 734,465.70 and 371,545.80 is: 557,318.70
Step by Step Solution
- Step 1: Write the proportion equation
489,643.80 : 734,465.70 = 371,545.80 : x - Step 2: Convert to fraction form
489,643.80/734,465.70 = 371,545.80/x - Step 3: Cross multiply
489,643.80x = 734,465.70 × 371,545.80 - Step 4: Simplify right side
489,643.80x = 272,887,646,079.06 - Step 5: Solve for x
x = 272,887,646,079.06/489,643.80 - Step 6: Final answer
x = 557,318.70
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1.5x scale
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.