Finding the Fourth Proportional to 640,064.12, 883,315.32 and 368,132.09
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Solution
The fourth proportional to 640,064.12, 883,315.32 and 368,132.09 is: 508,037.72
Step by Step Solution
- Step 1: Write the proportion equation
640,064.12 : 883,315.32 = 368,132.09 : x - Step 2: Convert to fraction form
640,064.12/883,315.32 = 368,132.09/x - Step 3: Cross multiply
640,064.12x = 883,315.32 × 368,132.09 - Step 4: Simplify right side
640,064.12x = 325,176,714,880.62 - Step 5: Solve for x
x = 325,176,714,880.62/640,064.12 - Step 6: Final answer
x = 508,037.72
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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.