Finding the Fourth Proportional to 654,965.16, 903,803.58 and 368,430.09
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Solution
The fourth proportional to 654,965.16, 903,803.58 and 368,430.09 is: 508,406.33
Step by Step Solution
- Step 1: Write the proportion equation
654,965.16 : 903,803.58 = 368,430.09 : x - Step 2: Convert to fraction form
654,965.16/903,803.58 = 368,430.09/x - Step 3: Cross multiply
654,965.16x = 903,803.58 × 368,430.09 - Step 4: Simplify right side
654,965.16x = 332,988,434,321.72 - Step 5: Solve for x
x = 332,988,434,321.72/654,965.16 - Step 6: Final answer
x = 508,406.33
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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.