Finding the Fourth Proportional to 687,497.70, 1,031,246.55 and 288,031.62
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Solution
The fourth proportional to 687,497.70, 1,031,246.55 and 288,031.62 is: 432,047.43
Step by Step Solution
- Step 1: Write the proportion equation
687,497.70 : 1,031,246.55 = 288,031.62 : x - Step 2: Convert to fraction form
687,497.70/1,031,246.55 = 288,031.62/x - Step 3: Cross multiply
687,497.70x = 1,031,246.55 × 288,031.62 - Step 4: Simplify right side
687,497.70x = 297,031,614,415.91 - Step 5: Solve for x
x = 297,031,614,415.91/687,497.70 - Step 6: Final answer
x = 432,047.43
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.