Finding the Fourth Proportional to 687,417.84, 1,031,240.97 and 288,088.65
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Solution
The fourth proportional to 687,417.84, 1,031,240.97 and 288,088.65 is: 432,180.84
Step by Step Solution
- Step 1: Write the proportion equation
687,417.84 : 1,031,240.97 = 288,088.65 : x - Step 2: Convert to fraction form
687,417.84/1,031,240.97 = 288,088.65/x - Step 3: Cross multiply
687,417.84x = 1,031,240.97 × 288,088.65 - Step 4: Simplify right side
687,417.84x = 297,088,818,871.99 - Step 5: Solve for x
x = 297,088,818,871.99/687,417.84 - Step 6: Final answer
x = 432,180.84
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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.