Finding the Fourth Proportional to 515,132.21, 772,649.04 and 315,349.76
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Solution
The fourth proportional to 515,132.21, 772,649.04 and 315,349.76 is: 472,994.48
Step by Step Solution
- Step 1: Write the proportion equation
515,132.21 : 772,649.04 = 315,349.76 : x - Step 2: Convert to fraction form
515,132.21/772,649.04 = 315,349.76/x - Step 3: Cross multiply
515,132.21x = 772,649.04 × 315,349.76 - Step 4: Simplify right side
515,132.21x = 243,654,689,328.23 - Step 5: Solve for x
x = 243,654,689,328.23/515,132.21 - Step 6: Final answer
x = 472,994.48
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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.