Finding the Fourth Proportional to 747,516.63, 1,031,558.31 and 407,987.31
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Solution
The fourth proportional to 747,516.63, 1,031,558.31 and 407,987.31 is: 563,014.50
Step by Step Solution
- Step 1: Write the proportion equation
747,516.63 : 1,031,558.31 = 407,987.31 : x - Step 2: Convert to fraction form
747,516.63/1,031,558.31 = 407,987.31/x - Step 3: Cross multiply
747,516.63x = 1,031,558.31 × 407,987.31 - Step 4: Simplify right side
747,516.63x = 420,862,700,005.05 - Step 5: Solve for x
x = 420,862,700,005.05/747,516.63 - Step 6: Final answer
x = 563,014.50
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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.