Finding the Fourth Proportional to 559,389.68, 771,963.06 and 317,677.28
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Solution
The fourth proportional to 559,389.68, 771,963.06 and 317,677.28 is: 438,397.66
Step by Step Solution
- Step 1: Write the proportion equation
559,389.68 : 771,963.06 = 317,677.28 : x - Step 2: Convert to fraction form
559,389.68/771,963.06 = 317,677.28/x - Step 3: Cross multiply
559,389.68x = 771,963.06 × 317,677.28 - Step 4: Simplify right side
559,389.68x = 245,235,125,161.28 - Step 5: Solve for x
x = 245,235,125,161.28/559,389.68 - Step 6: Final answer
x = 438,397.66
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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.