Finding the Fourth Proportional to 478,423.70, 717,635.55 and 455,095.70
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Solution
The fourth proportional to 478,423.70, 717,635.55 and 455,095.70 is: 682,643.55
Step by Step Solution
- Step 1: Write the proportion equation
478,423.70 : 717,635.55 = 455,095.70 : x - Step 2: Convert to fraction form
478,423.70/717,635.55 = 455,095.70/x - Step 3: Cross multiply
478,423.70x = 717,635.55 × 455,095.70 - Step 4: Simplify right side
478,423.70x = 326,592,852,972.14 - Step 5: Solve for x
x = 326,592,852,972.14/478,423.70 - Step 6: Final answer
x = 682,643.55
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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.