Finding the Fourth Proportional to 12,249,990.78, 16,905,202.28 and 6,668,397.79
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Solution
The fourth proportional to 12,249,990.78, 16,905,202.28 and 6,668,397.79 is: 9,202,505.99
Step by Step Solution
- Step 1: Write the proportion equation
12,249,990.78 : 16,905,202.28 = 6,668,397.79 : x - Step 2: Convert to fraction form
12,249,990.78/16,905,202.28 = 6,668,397.79/x - Step 3: Cross multiply
12,249,990.78x = 16,905,202.28 × 6,668,397.79 - Step 4: Simplify right side
12,249,990.78x = 112,730,613,523,454.97 - Step 5: Solve for x
x = 112,730,613,523,454.97/12,249,990.78 - Step 6: Final answer
x = 9,202,505.99
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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.