Finding the Fourth Proportional to 1,323,869,694.70, 1,985,804,542.05 and 864,704,670.70
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Solution
The fourth proportional to 1,323,869,694.70, 1,985,804,542.05 and 864,704,670.70 is: 1,297,057,006.05
Step by Step Solution
- Step 1: Write the proportion equation
1,323,869,694.70 : 1,985,804,542.05 = 864,704,670.70 : x - Step 2: Convert to fraction form
1,323,869,694.70/1,985,804,542.05 = 864,704,670.70/x - Step 3: Cross multiply
1,323,869,694.70x = 1,985,804,542.05 × 864,704,670.70 - Step 4: Simplify right side
1,323,869,694.70x = 1,717,134,462,607,909,632 - Step 5: Solve for x
x = 1,717,134,462,607,909,632/1,323,869,694.70 - Step 6: Final answer
x = 1,297,057,006.05
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Double scale
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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.