Finding the Fourth Proportional to 489,643.40, 734,465.10 and 321,681.80
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Solution
The fourth proportional to 489,643.40, 734,465.10 and 321,681.80 is: 482,522.70
Step by Step Solution
- Step 1: Write the proportion equation
489,643.40 : 734,465.10 = 321,681.80 : x - Step 2: Convert to fraction form
489,643.40/734,465.10 = 321,681.80/x - Step 3: Cross multiply
489,643.40x = 734,465.10 × 321,681.80 - Step 4: Simplify right side
489,643.40x = 236,264,055,405.18 - Step 5: Solve for x
x = 236,264,055,405.18/489,643.40 - Step 6: Final answer
x = 482,522.70
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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.