Finding the Fourth Proportional to 709,646.47, 979,277.91 and 403,694.05
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Solution
The fourth proportional to 709,646.47, 979,277.91 and 403,694.05 is: 557,078.33
Step by Step Solution
- Step 1: Write the proportion equation
709,646.47 : 979,277.91 = 403,694.05 : x - Step 2: Convert to fraction form
709,646.47/979,277.91 = 403,694.05/x - Step 3: Cross multiply
709,646.47x = 979,277.91 × 403,694.05 - Step 4: Simplify right side
709,646.47x = 395,328,667,327.14 - Step 5: Solve for x
x = 395,328,667,327.14/709,646.47 - Step 6: Final answer
x = 557,078.33
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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.