Finding the Fourth Proportional to 3,940,742,455.65, 5,438,221,039.47 and 2,224,452,949.31
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Solution
The fourth proportional to 3,940,742,455.65, 5,438,221,039.47 and 2,224,452,949.31 is: 3,069,743,066.53
Step by Step Solution
- Step 1: Write the proportion equation
3,940,742,455.65 : 5,438,221,039.47 = 2,224,452,949.31 : x - Step 2: Convert to fraction form
3,940,742,455.65/5,438,221,039.47 = 2,224,452,949.31/x - Step 3: Cross multiply
3,940,742,455.65x = 5,438,221,039.47 × 2,224,452,949.31 - Step 4: Simplify right side
3,940,742,455.65x = 12,097,066,830,221,543,424 - Step 5: Solve for x
x = 12,097,066,830,221,543,424/3,940,742,455.65 - Step 6: Final answer
x = 3,069,743,066.53
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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.