Finding the Fourth Proportional to 1,173,670,541.62, 1,619,701,796.46 and 645,024,921.28
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Solution
The fourth proportional to 1,173,670,541.62, 1,619,701,796.46 and 645,024,921.28 is: 890,154,422.99
Step by Step Solution
- Step 1: Write the proportion equation
1,173,670,541.62 : 1,619,701,796.46 = 645,024,921.28 : x - Step 2: Convert to fraction form
1,173,670,541.62/1,619,701,796.46 = 645,024,921.28/x - Step 3: Cross multiply
1,173,670,541.62x = 1,619,701,796.46 × 645,024,921.28 - Step 4: Simplify right side
1,173,670,541.62x = 1,044,748,023,758,686,080 - Step 5: Solve for x
x = 1,044,748,023,758,686,080/1,173,670,541.62 - Step 6: Final answer
x = 890,154,422.99
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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.