Finding the Fourth Proportional to 19,299,206.19, 28,942,386.53 and 7,781,698.65
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Solution
The fourth proportional to 19,299,206.19, 28,942,386.53 and 7,781,698.65 is: 11,669,958.23
Step by Step Solution
- Step 1: Write the proportion equation
19,299,206.19 : 28,942,386.53 = 7,781,698.65 : x - Step 2: Convert to fraction form
19,299,206.19/28,942,386.53 = 7,781,698.65/x - Step 3: Cross multiply
19,299,206.19x = 28,942,386.53 × 7,781,698.65 - Step 4: Simplify right side
19,299,206.19x = 225,220,930,149,370.69 - Step 5: Solve for x
x = 225,220,930,149,370.69/19,299,206.19 - Step 6: Final answer
x = 11,669,958.23
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.