Finding the Fourth Proportional to 747,417.38, 1,031,435.70 and 407,885.63
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Solution
The fourth proportional to 747,417.38, 1,031,435.70 and 407,885.63 is: 562,882.01
Step by Step Solution
- Step 1: Write the proportion equation
747,417.38 : 1,031,435.70 = 407,885.63 : x - Step 2: Convert to fraction form
747,417.38/1,031,435.70 = 407,885.63/x - Step 3: Cross multiply
747,417.38x = 1,031,435.70 × 407,885.63 - Step 4: Simplify right side
747,417.38x = 420,707,795,141.81 - Step 5: Solve for x
x = 420,707,795,141.81/747,417.38 - Step 6: Final answer
x = 562,882.01
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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.