Finding the Fourth Proportional to 688,733.98, 1,031,382.79 and 435,249.75
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Solution
The fourth proportional to 688,733.98, 1,031,382.79 and 435,249.75 is: 651,788.81
Step by Step Solution
- Step 1: Write the proportion equation
688,733.98 : 1,031,382.79 = 435,249.75 : x - Step 2: Convert to fraction form
688,733.98/1,031,382.79 = 435,249.75/x - Step 3: Cross multiply
688,733.98x = 1,031,382.79 × 435,249.75 - Step 4: Simplify right side
688,733.98x = 448,909,101,501.80 - Step 5: Solve for x
x = 448,909,101,501.80/688,733.98 - Step 6: Final answer
x = 651,788.81
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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.