Finding the Fourth Proportional to 418,563.12, 623,901.68 and 384,970.80
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Solution
The fourth proportional to 418,563.12, 623,901.68 and 384,970.80 is: 573,829.65
Step by Step Solution
- Step 1: Write the proportion equation
418,563.12 : 623,901.68 = 384,970.80 : x - Step 2: Convert to fraction form
418,563.12/623,901.68 = 384,970.80/x - Step 3: Cross multiply
418,563.12x = 623,901.68 × 384,970.80 - Step 4: Simplify right side
418,563.12x = 240,183,928,870.94 - Step 5: Solve for x
x = 240,183,928,870.94/418,563.12 - Step 6: Final answer
x = 573,829.65
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.