Finding the Fourth Proportional to 440,421.90, 607,878.99 and 289,532.94
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Solution
The fourth proportional to 440,421.90, 607,878.99 and 289,532.94 is: 399,619.07
Step by Step Solution
- Step 1: Write the proportion equation
440,421.90 : 607,878.99 = 289,532.94 : x - Step 2: Convert to fraction form
440,421.90/607,878.99 = 289,532.94/x - Step 3: Cross multiply
440,421.90x = 607,878.99 × 289,532.94 - Step 4: Simplify right side
440,421.90x = 176,000,991,138.93 - Step 5: Solve for x
x = 176,000,991,138.93/440,421.90 - Step 6: Final answer
x = 399,619.07
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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.