Finding the Fourth Proportional to 1,223,557.98, 1,688,509.12 and 679,744.63
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Solution
The fourth proportional to 1,223,557.98, 1,688,509.12 and 679,744.63 is: 938,047.09
Step by Step Solution
- Step 1: Write the proportion equation
1,223,557.98 : 1,688,509.12 = 679,744.63 : x - Step 2: Convert to fraction form
1,223,557.98/1,688,509.12 = 679,744.63/x - Step 3: Cross multiply
1,223,557.98x = 1,688,509.12 × 679,744.63 - Step 4: Simplify right side
1,223,557.98x = 1,147,755,007,026.03 - Step 5: Solve for x
x = 1,147,755,007,026.03/1,223,557.98 - Step 6: Final answer
x = 938,047.09
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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.