Finding the Fourth Proportional to 612,787.68, 845,644.86 and 344,515.68
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Solution
The fourth proportional to 612,787.68, 845,644.86 and 344,515.68 is: 475,430.44
Step by Step Solution
- Step 1: Write the proportion equation
612,787.68 : 845,644.86 = 344,515.68 : x - Step 2: Convert to fraction form
612,787.68/845,644.86 = 344,515.68/x - Step 3: Cross multiply
612,787.68x = 845,644.86 × 344,515.68 - Step 4: Simplify right side
612,787.68x = 291,337,913,981.41 - Step 5: Solve for x
x = 291,337,913,981.41/612,787.68 - Step 6: Final answer
x = 475,430.44
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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.