Finding the Fourth Proportional to 518,421.70, 715,177.47 and 303,428.62
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Solution
The fourth proportional to 518,421.70, 715,177.47 and 303,428.62 is: 418,588.41
Step by Step Solution
- Step 1: Write the proportion equation
518,421.70 : 715,177.47 = 303,428.62 : x - Step 2: Convert to fraction form
518,421.70/715,177.47 = 303,428.62/x - Step 3: Cross multiply
518,421.70x = 715,177.47 × 303,428.62 - Step 4: Simplify right side
518,421.70x = 217,005,312,777.19 - Step 5: Solve for x
x = 217,005,312,777.19/518,421.70 - Step 6: Final answer
x = 418,588.41
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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.