Finding the Fourth Proportional to 28,516,217.80, 42,774,326.70 and 17,178,809.80
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Solution
The fourth proportional to 28,516,217.80, 42,774,326.70 and 17,178,809.80 is: 25,768,214.70
Step by Step Solution
- Step 1: Write the proportion equation
28,516,217.80 : 42,774,326.70 = 17,178,809.80 : x - Step 2: Convert to fraction form
28,516,217.80/42,774,326.70 = 17,178,809.80/x - Step 3: Cross multiply
28,516,217.80x = 42,774,326.70 × 17,178,809.80 - Step 4: Simplify right side
28,516,217.80x = 734,812,022,702,361.75 - Step 5: Solve for x
x = 734,812,022,702,361.75/28,516,217.80 - Step 6: Final answer
x = 25,768,214.70
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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.