Finding the Fourth Proportional to 529,173.69, 730,173.12 and 311,565.74
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Solution
The fourth proportional to 529,173.69, 730,173.12 and 311,565.74 is: 429,909.75
Step by Step Solution
- Step 1: Write the proportion equation
529,173.69 : 730,173.12 = 311,565.74 : x - Step 2: Convert to fraction form
529,173.69/730,173.12 = 311,565.74/x - Step 3: Cross multiply
529,173.69x = 730,173.12 × 311,565.74 - Step 4: Simplify right side
529,173.69x = 227,496,928,460.91 - Step 5: Solve for x
x = 227,496,928,460.91/529,173.69 - Step 6: Final answer
x = 429,909.75
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.