Finding the Fourth Proportional to 688,134.12, 1,032,539.34 and 309,322.50
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Solution
The fourth proportional to 688,134.12, 1,032,539.34 and 309,322.50 is: 464,135.76
Step by Step Solution
- Step 1: Write the proportion equation
688,134.12 : 1,032,539.34 = 309,322.50 : x - Step 2: Convert to fraction form
688,134.12/1,032,539.34 = 309,322.50/x - Step 3: Cross multiply
688,134.12x = 1,032,539.34 × 309,322.50 - Step 4: Simplify right side
688,134.12x = 319,387,649,997.15 - Step 5: Solve for x
x = 319,387,649,997.15/688,134.12 - Step 6: Final answer
x = 464,135.76
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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.