Finding the Fourth Proportional to 7,066,860.18, 9,758,328.56 and 6,838,340.55
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Solution
The fourth proportional to 7,066,860.18, 9,758,328.56 and 6,838,340.55 is: 9,442,775.46
Step by Step Solution
- Step 1: Write the proportion equation
7,066,860.18 : 9,758,328.56 = 6,838,340.55 : x - Step 2: Convert to fraction form
7,066,860.18/9,758,328.56 = 6,838,340.55/x - Step 3: Cross multiply
7,066,860.18x = 9,758,328.56 × 6,838,340.55 - Step 4: Simplify right side
7,066,860.18x = 66,730,773,892,071.11 - Step 5: Solve for x
x = 66,730,773,892,071.11/7,066,860.18 - Step 6: Final answer
x = 9,442,775.46
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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.