Finding the Fourth Proportional to 1,431,578,439.16, 1,975,347,782.58 and 805,009,509.88
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Solution
The fourth proportional to 1,431,578,439.16, 1,975,347,782.58 and 805,009,509.88 is: 1,110,783,528.73
Step by Step Solution
- Step 1: Write the proportion equation
1,431,578,439.16 : 1,975,347,782.58 = 805,009,509.88 : x - Step 2: Convert to fraction form
1,431,578,439.16/1,975,347,782.58 = 805,009,509.88/x - Step 3: Cross multiply
1,431,578,439.16x = 1,975,347,782.58 × 805,009,509.88 - Step 4: Simplify right side
1,431,578,439.16x = 1,590,173,750,297,270,528 - Step 5: Solve for x
x = 1,590,173,750,297,270,528/1,431,578,439.16 - Step 6: Final answer
x = 1,110,783,528.73
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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.