Finding the Fourth Proportional to 709,921.08, 979,693.14 and 387,633.96
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Solution
The fourth proportional to 709,921.08, 979,693.14 and 387,633.96 is: 534,935.98
Step by Step Solution
- Step 1: Write the proportion equation
709,921.08 : 979,693.14 = 387,633.96 : x - Step 2: Convert to fraction form
709,921.08/979,693.14 = 387,633.96/x - Step 3: Cross multiply
709,921.08x = 979,693.14 × 387,633.96 - Step 4: Simplify right side
709,921.08x = 379,762,331,443.03 - Step 5: Solve for x
x = 379,762,331,443.03/709,921.08 - Step 6: Final answer
x = 534,935.98
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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.