Finding the Fourth Proportional to 628,992,023.30, 943,488,034.95 and 445,326,013.70
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Solution
The fourth proportional to 628,992,023.30, 943,488,034.95 and 445,326,013.70 is: 667,989,020.55
Step by Step Solution
- Step 1: Write the proportion equation
628,992,023.30 : 943,488,034.95 = 445,326,013.70 : x - Step 2: Convert to fraction form
628,992,023.30/943,488,034.95 = 445,326,013.70/x - Step 3: Cross multiply
628,992,023.30x = 943,488,034.95 × 445,326,013.70 - Step 4: Simplify right side
628,992,023.30x = 420,159,765,577,929,792 - Step 5: Solve for x
x = 420,159,765,577,929,792/628,992,023.30 - Step 6: Final answer
x = 667,989,020.55
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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.