Finding the Fourth Proportional to 689,731,117.24, 1,035,053,618.67 and 379,055,690.75
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Solution
The fourth proportional to 689,731,117.24, 1,035,053,618.67 and 379,055,690.75 is: 568,834,658.29
Step by Step Solution
- Step 1: Write the proportion equation
689,731,117.24 : 1,035,053,618.67 = 379,055,690.75 : x - Step 2: Convert to fraction form
689,731,117.24/1,035,053,618.67 = 379,055,690.75/x - Step 3: Cross multiply
689,731,117.24x = 1,035,053,618.67 × 379,055,690.75 - Step 4: Simplify right side
689,731,117.24x = 392,342,964,388,243,904 - Step 5: Solve for x
x = 392,342,964,388,243,904/689,731,117.24 - Step 6: Final answer
x = 568,834,658.29
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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.