Finding the Fourth Proportional to 709,688.76, 979,336.35 and 403,736.40
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Solution
The fourth proportional to 709,688.76, 979,336.35 and 403,736.40 is: 557,136.81
Step by Step Solution
- Step 1: Write the proportion equation
709,688.76 : 979,336.35 = 403,736.40 : x - Step 2: Convert to fraction form
709,688.76/979,336.35 = 403,736.40/x - Step 3: Cross multiply
709,688.76x = 979,336.35 × 403,736.40 - Step 4: Simplify right side
709,688.76x = 395,393,732,338.14 - Step 5: Solve for x
x = 395,393,732,338.14/709,688.76 - Step 6: Final answer
x = 557,136.81
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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.