Finding the Fourth Proportional to 709,424.93, 979,027.16 and 387,155.70
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Solution
The fourth proportional to 709,424.93, 979,027.16 and 387,155.70 is: 534,286.19
Step by Step Solution
- Step 1: Write the proportion equation
709,424.93 : 979,027.16 = 387,155.70 : x - Step 2: Convert to fraction form
709,424.93/979,027.16 = 387,155.70/x - Step 3: Cross multiply
709,424.93x = 979,027.16 × 387,155.70 - Step 4: Simplify right side
709,424.93x = 379,035,943,513.03 - Step 5: Solve for x
x = 379,035,943,513.03/709,424.93 - Step 6: Final answer
x = 534,286.19
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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.