Finding the Fourth Proportional to 5,172,853.70, 7,759,280.64 and 1,578,639.08
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Solution
The fourth proportional to 5,172,853.70, 7,759,280.64 and 1,578,639.08 is: 2,367,958.65
Step by Step Solution
- Step 1: Write the proportion equation
5,172,853.70 : 7,759,280.64 = 1,578,639.08 : x - Step 2: Convert to fraction form
5,172,853.70/7,759,280.64 = 1,578,639.08/x - Step 3: Cross multiply
5,172,853.70x = 7,759,280.64 × 1,578,639.08 - Step 4: Simplify right side
5,172,853.70x = 12,249,103,650,991.41 - Step 5: Solve for x
x = 12,249,103,650,991.41/5,172,853.70 - Step 6: Final answer
x = 2,367,958.65
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.