Finding the Fourth Proportional to 660,742.88, 911,747.81 and 388,750.95
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Solution
The fourth proportional to 660,742.88, 911,747.81 and 388,750.95 is: 536,430.80
Step by Step Solution
- Step 1: Write the proportion equation
660,742.88 : 911,747.81 = 388,750.95 : x - Step 2: Convert to fraction form
660,742.88/911,747.81 = 388,750.95/x - Step 3: Cross multiply
660,742.88x = 911,747.81 × 388,750.95 - Step 4: Simplify right side
660,742.88x = 354,442,828,269.80 - Step 5: Solve for x
x = 354,442,828,269.80/660,742.88 - Step 6: Final answer
x = 536,430.80
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.