Finding the Fourth Proportional to 742,778.68, 1,025,031.72 and 403,246.84
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Solution
The fourth proportional to 742,778.68, 1,025,031.72 and 403,246.84 is: 556,479.09
Step by Step Solution
- Step 1: Write the proportion equation
742,778.68 : 1,025,031.72 = 403,246.84 : x - Step 2: Convert to fraction form
742,778.68/1,025,031.72 = 403,246.84/x - Step 3: Cross multiply
742,778.68x = 1,025,031.72 × 403,246.84 - Step 4: Simplify right side
742,778.68x = 413,340,801,989.77 - Step 5: Solve for x
x = 413,340,801,989.77/742,778.68 - Step 6: Final answer
x = 556,479.09
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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.