Finding the Fourth Proportional to 518,833.68, 715,881.61 and 314,991.91
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Solution
The fourth proportional to 518,833.68, 715,881.61 and 314,991.91 is: 434,622.74
Step by Step Solution
- Step 1: Write the proportion equation
518,833.68 : 715,881.61 = 314,991.91 : x - Step 2: Convert to fraction form
518,833.68/715,881.61 = 314,991.91/x - Step 3: Cross multiply
518,833.68x = 715,881.61 × 314,991.91 - Step 4: Simplify right side
518,833.68x = 225,496,915,667.78 - Step 5: Solve for x
x = 225,496,915,667.78/518,833.68 - Step 6: Final answer
x = 434,622.74
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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.