Finding the Fourth Proportional to 1,987,488.65, 2,742,035.82 and 1,299,563.18
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Solution
The fourth proportional to 1,987,488.65, 2,742,035.82 and 1,299,563.18 is: 1,792,940.45
Step by Step Solution
- Step 1: Write the proportion equation
1,987,488.65 : 2,742,035.82 = 1,299,563.18 : x - Step 2: Convert to fraction form
1,987,488.65/2,742,035.82 = 1,299,563.18/x - Step 3: Cross multiply
1,987,488.65x = 2,742,035.82 × 1,299,563.18 - Step 4: Simplify right side
1,987,488.65x = 3,563,448,776,202.93 - Step 5: Solve for x
x = 3,563,448,776,202.93/1,987,488.65 - Step 6: Final answer
x = 1,792,940.45
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.