Finding the Fourth Proportional to 636,435.17, 878,303.13 and 349,977.05
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Solution
The fourth proportional to 636,435.17, 878,303.13 and 349,977.05 is: 482,980.75
Step by Step Solution
- Step 1: Write the proportion equation
636,435.17 : 878,303.13 = 349,977.05 : x - Step 2: Convert to fraction form
636,435.17/878,303.13 = 349,977.05/x - Step 3: Cross multiply
636,435.17x = 878,303.13 × 349,977.05 - Step 4: Simplify right side
636,435.17x = 307,385,938,443.17 - Step 5: Solve for x
x = 307,385,938,443.17/636,435.17 - Step 6: Final answer
x = 482,980.75
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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.