Finding the Fourth Proportional to 1,376,902,633.20, 2,065,963,860.36 and 721,697,948.88
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Solution
The fourth proportional to 1,376,902,633.20, 2,065,963,860.36 and 721,697,948.88 is: 1,082,866,605.47
Step by Step Solution
- Step 1: Write the proportion equation
1,376,902,633.20 : 2,065,963,860.36 = 721,697,948.88 : x - Step 2: Convert to fraction form
1,376,902,633.20/2,065,963,860.36 = 721,697,948.88/x - Step 3: Cross multiply
1,376,902,633.20x = 2,065,963,860.36 × 721,697,948.88 - Step 4: Simplify right side
1,376,902,633.20x = 1,491,001,880,482,018,560 - Step 5: Solve for x
x = 1,491,001,880,482,018,560/1,376,902,633.20 - Step 6: Final answer
x = 1,082,866,605.47
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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.