Finding the Fourth Proportional to 747,459.50, 1,031,479.72 and 407,930.18
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Solution
The fourth proportional to 747,459.50, 1,031,479.72 and 407,930.18 is: 562,935.79
Step by Step Solution
- Step 1: Write the proportion equation
747,459.50 : 1,031,479.72 = 407,930.18 : x - Step 2: Convert to fraction form
747,459.50/1,031,479.72 = 407,930.18/x - Step 3: Cross multiply
747,459.50x = 1,031,479.72 × 407,930.18 - Step 4: Simplify right side
747,459.50x = 420,771,701,668.73 - Step 5: Solve for x
x = 420,771,701,668.73/747,459.50 - Step 6: Final answer
x = 562,935.79
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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.