Finding the Fourth Proportional to 528,718,894.10, 729,588,218.99 and 290,551,555.38
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Solution
The fourth proportional to 528,718,894.10, 729,588,218.99 and 290,551,555.38 is: 400,937,046.47
Step by Step Solution
- Step 1: Write the proportion equation
528,718,894.10 : 729,588,218.99 = 290,551,555.38 : x - Step 2: Convert to fraction form
528,718,894.10/729,588,218.99 = 290,551,555.38/x - Step 3: Cross multiply
528,718,894.10x = 729,588,218.99 × 290,551,555.38 - Step 4: Simplify right side
528,718,894.10x = 211,982,991,813,015,808 - Step 5: Solve for x
x = 211,982,991,813,015,808/528,718,894.10 - Step 6: Final answer
x = 400,937,046.47
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.