Finding the Fourth Proportional to 687,809.24, 949,206.40 and 381,885.65
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Solution
The fourth proportional to 687,809.24, 949,206.40 and 381,885.65 is: 527,018.66
Step by Step Solution
- Step 1: Write the proportion equation
687,809.24 : 949,206.40 = 381,885.65 : x - Step 2: Convert to fraction form
687,809.24/949,206.40 = 381,885.65/x - Step 3: Cross multiply
687,809.24x = 949,206.40 × 381,885.65 - Step 4: Simplify right side
687,809.24x = 362,488,306,246.22 - Step 5: Solve for x
x = 362,488,306,246.22/687,809.24 - Step 6: Final answer
x = 527,018.66
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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.