Finding the Fourth Proportional to 528,718,893.35, 729,588,217.95 and 290,551,554.63
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Solution
The fourth proportional to 528,718,893.35, 729,588,217.95 and 290,551,554.63 is: 400,937,045.44
Step by Step Solution
- Step 1: Write the proportion equation
528,718,893.35 : 729,588,217.95 = 290,551,554.63 : x - Step 2: Convert to fraction form
528,718,893.35/729,588,217.95 = 290,551,554.63/x - Step 3: Cross multiply
528,718,893.35x = 729,588,217.95 × 290,551,554.63 - Step 4: Simplify right side
528,718,893.35x = 211,982,990,965,103,776 - Step 5: Solve for x
x = 211,982,990,965,103,776/528,718,893.35 - Step 6: Final answer
x = 400,937,045.44
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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.