Finding the Fourth Proportional to 7,415,137.80, 10,403,587.80 and 7,415,137.80
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Solution
The fourth proportional to 7,415,137.80, 10,403,587.80 and 7,415,137.80 is: 10,403,587.80
Step by Step Solution
- Step 1: Write the proportion equation
7,415,137.80 : 10,403,587.80 = 7,415,137.80 : x - Step 2: Convert to fraction form
7,415,137.80/10,403,587.80 = 7,415,137.80/x - Step 3: Cross multiply
7,415,137.80x = 10,403,587.80 × 7,415,137.80 - Step 4: Simplify right side
7,415,137.80x = 77,144,037,151,398.84 - Step 5: Solve for x
x = 77,144,037,151,398.84/7,415,137.80 - Step 6: Final answer
x = 10,403,587.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.