Finding the Fourth Proportional to 7,142,679.84, 9,855,209.58 and 4,202,625.26
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Solution
The fourth proportional to 7,142,679.84, 9,855,209.58 and 4,202,625.26 is: 5,798,629.32
Step by Step Solution
- Step 1: Write the proportion equation
7,142,679.84 : 9,855,209.58 = 4,202,625.26 : x - Step 2: Convert to fraction form
7,142,679.84/9,855,209.58 = 4,202,625.26/x - Step 3: Cross multiply
7,142,679.84x = 9,855,209.58 × 4,202,625.26 - Step 4: Simplify right side
7,142,679.84x = 41,417,752,723,501.99 - Step 5: Solve for x
x = 41,417,752,723,501.99/7,142,679.84 - Step 6: Final answer
x = 5,798,629.32
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1.5x scale
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.