Finding the Fourth Proportional to 1,376,902,312.47, 2,065,963,379.40 and 721,697,626.53
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Solution
The fourth proportional to 1,376,902,312.47, 2,065,963,379.40 and 721,697,626.53 is: 1,082,866,121.95
Step by Step Solution
- Step 1: Write the proportion equation
1,376,902,312.47 : 2,065,963,379.40 = 721,697,626.53 : x - Step 2: Convert to fraction form
1,376,902,312.47/2,065,963,379.40 = 721,697,626.53/x - Step 3: Cross multiply
1,376,902,312.47x = 2,065,963,379.40 × 721,697,626.53 - Step 4: Simplify right side
1,376,902,312.47x = 1,491,000,867,410,877,952 - Step 5: Solve for x
x = 1,491,000,867,410,877,952/1,376,902,312.47 - Step 6: Final answer
x = 1,082,866,121.95
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.