Finding the Fourth Proportional to 569,378.21, 785,742.10 and 311,256.29
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Solution
The fourth proportional to 569,378.21, 785,742.10 and 311,256.29 is: 429,533.77
Step by Step Solution
- Step 1: Write the proportion equation
569,378.21 : 785,742.10 = 311,256.29 : x - Step 2: Convert to fraction form
569,378.21/785,742.10 = 311,256.29/x - Step 3: Cross multiply
569,378.21x = 785,742.10 × 311,256.29 - Step 4: Simplify right side
569,378.21x = 244,567,169,460.04 - Step 5: Solve for x
x = 244,567,169,460.04/569,378.21 - Step 6: Final answer
x = 429,533.77
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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.