Finding the Fourth Proportional to 657,787.64, 907,746.99 and 355,981.64
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Solution
The fourth proportional to 657,787.64, 907,746.99 and 355,981.64 is: 491,254.69
Step by Step Solution
- Step 1: Write the proportion equation
657,787.64 : 907,746.99 = 355,981.64 : x - Step 2: Convert to fraction form
657,787.64/907,746.99 = 355,981.64/x - Step 3: Cross multiply
657,787.64x = 907,746.99 × 355,981.64 - Step 4: Simplify right side
657,787.64x = 323,141,262,205.26 - Step 5: Solve for x
x = 323,141,262,205.26/657,787.64 - Step 6: Final answer
x = 491,254.69
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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.