Finding the Fourth Proportional to 493,774.02, 681,701.81 and 312,641.21
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Solution
The fourth proportional to 493,774.02, 681,701.81 and 312,641.21 is: 431,630.80
Step by Step Solution
- Step 1: Write the proportion equation
493,774.02 : 681,701.81 = 312,641.21 : x - Step 2: Convert to fraction form
493,774.02/681,701.81 = 312,641.21/x - Step 3: Cross multiply
493,774.02x = 681,701.81 × 312,641.21 - Step 4: Simplify right side
493,774.02x = 213,128,075,470.13 - Step 5: Solve for x
x = 213,128,075,470.13/493,774.02 - Step 6: Final answer
x = 431,630.80
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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.