Finding the Fourth Proportional to 553,420.49, 763,889.64 and 324,031.55
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Solution
The fourth proportional to 553,420.49, 763,889.64 and 324,031.55 is: 447,262.70
Step by Step Solution
- Step 1: Write the proportion equation
553,420.49 : 763,889.64 = 324,031.55 : x - Step 2: Convert to fraction form
553,420.49/763,889.64 = 324,031.55/x - Step 3: Cross multiply
553,420.49x = 763,889.64 × 324,031.55 - Step 4: Simplify right side
553,420.49x = 247,524,344,078.14 - Step 5: Solve for x
x = 247,524,344,078.14/553,420.49 - Step 6: Final answer
x = 447,262.70
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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.