Finding the Fourth Proportional to 717,785.18, 990,734.56 and 423,693.48
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Solution
The fourth proportional to 717,785.18, 990,734.56 and 423,693.48 is: 584,809.75
Step by Step Solution
- Step 1: Write the proportion equation
717,785.18 : 990,734.56 = 423,693.48 : x - Step 2: Convert to fraction form
717,785.18/990,734.56 = 423,693.48/x - Step 3: Cross multiply
717,785.18x = 990,734.56 × 423,693.48 - Step 4: Simplify right side
717,785.18x = 419,767,771,364.20 - Step 5: Solve for x
x = 419,767,771,364.20/717,785.18 - Step 6: Final answer
x = 584,809.75
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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.