Finding the Fourth Proportional to 709,867.98, 979,502.24 and 419,439.08
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Solution
The fourth proportional to 709,867.98, 979,502.24 and 419,439.08 is: 578,757.65
Step by Step Solution
- Step 1: Write the proportion equation
709,867.98 : 979,502.24 = 419,439.08 : x - Step 2: Convert to fraction form
709,867.98/979,502.24 = 419,439.08/x - Step 3: Cross multiply
709,867.98x = 979,502.24 × 419,439.08 - Step 4: Simplify right side
709,867.98x = 410,841,521,900.89 - Step 5: Solve for x
x = 410,841,521,900.89/709,867.98 - Step 6: Final answer
x = 578,757.65
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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.