Finding the Fourth Proportional to 487,219.40, 730,829.10 and 319,257.80
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Solution
The fourth proportional to 487,219.40, 730,829.10 and 319,257.80 is: 478,886.70
Step by Step Solution
- Step 1: Write the proportion equation
487,219.40 : 730,829.10 = 319,257.80 : x - Step 2: Convert to fraction form
487,219.40/730,829.10 = 319,257.80/x - Step 3: Cross multiply
487,219.40x = 730,829.10 × 319,257.80 - Step 4: Simplify right side
487,219.40x = 233,322,890,641.98 - Step 5: Solve for x
x = 233,322,890,641.98/487,219.40 - Step 6: Final answer
x = 478,886.70
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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.