Finding the Fourth Proportional to 7,142,408.19, 9,854,989.88 and 4,242,776.67
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Solution
The fourth proportional to 7,142,408.19, 9,854,989.88 and 4,242,776.67 is: 5,854,120.91
Step by Step Solution
- Step 1: Write the proportion equation
7,142,408.19 : 9,854,989.88 = 4,242,776.67 : x - Step 2: Convert to fraction form
7,142,408.19/9,854,989.88 = 4,242,776.67/x - Step 3: Cross multiply
7,142,408.19x = 9,854,989.88 × 4,242,776.67 - Step 4: Simplify right side
7,142,408.19x = 41,812,521,124,736.22 - Step 5: Solve for x
x = 41,812,521,124,736.22/7,142,408.19 - Step 6: Final answer
x = 5,854,120.91
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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.