Finding the Fourth Proportional to 1,005,412.73, 1,387,459.78 and 748,438.84
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Solution
The fourth proportional to 1,005,412.73, 1,387,459.78 and 748,438.84 is: 1,032,838.32
Step by Step Solution
- Step 1: Write the proportion equation
1,005,412.73 : 1,387,459.78 = 748,438.84 : x - Step 2: Convert to fraction form
1,005,412.73/1,387,459.78 = 748,438.84/x - Step 3: Cross multiply
1,005,412.73x = 1,387,459.78 × 748,438.84 - Step 4: Simplify right side
1,005,412.73x = 1,038,428,792,363.05 - Step 5: Solve for x
x = 1,038,428,792,363.05/1,005,412.73 - Step 6: Final answer
x = 1,032,838.32
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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.