Finding the Fourth Proportional to 645,142,257.17, 967,718,986.17 and 208,442,988.02
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Solution
The fourth proportional to 645,142,257.17, 967,718,986.17 and 208,442,988.02 is: 312,666,291.50
Step by Step Solution
- Step 1: Write the proportion equation
645,142,257.17 : 967,718,986.17 = 208,442,988.02 : x - Step 2: Convert to fraction form
645,142,257.17/967,718,986.17 = 208,442,988.02/x - Step 3: Cross multiply
645,142,257.17x = 967,718,986.17 × 208,442,988.02 - Step 4: Simplify right side
645,142,257.17x = 201,714,237,040,438,752 - Step 5: Solve for x
x = 201,714,237,040,438,752/645,142,257.17 - Step 6: Final answer
x = 312,666,291.50
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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.