Finding the Fourth Proportional to 717,874.17, 990,672.99 and 395,595.79
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Solution
The fourth proportional to 717,874.17, 990,672.99 and 395,595.79 is: 545,925.85
Step by Step Solution
- Step 1: Write the proportion equation
717,874.17 : 990,672.99 = 395,595.79 : x - Step 2: Convert to fraction form
717,874.17/990,672.99 = 395,595.79/x - Step 3: Cross multiply
717,874.17x = 990,672.99 × 395,595.79 - Step 4: Simplify right side
717,874.17x = 391,906,064,110.71 - Step 5: Solve for x
x = 391,906,064,110.71/717,874.17 - Step 6: Final answer
x = 545,925.85
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1.5x scale
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.