Finding the Fourth Proportional to 729,642.09, 1,087,124.43 and 688,898.28
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Solution
The fourth proportional to 729,642.09, 1,087,124.43 and 688,898.28 is: 1,026,418.51
Step by Step Solution
- Step 1: Write the proportion equation
729,642.09 : 1,087,124.43 = 688,898.28 : x - Step 2: Convert to fraction form
729,642.09/1,087,124.43 = 688,898.28/x - Step 3: Cross multiply
729,642.09x = 1,087,124.43 × 688,898.28 - Step 4: Simplify right side
729,642.09x = 748,918,149,972.98 - Step 5: Solve for x
x = 748,918,149,972.98/729,642.09 - Step 6: Final answer
x = 1,026,418.51
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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.