Finding the Fourth Proportional to 1,313,328.60, 1,812,393.36 and 740,368.80
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Solution
The fourth proportional to 1,313,328.60, 1,812,393.36 and 740,368.80 is: 1,021,708.88
Step by Step Solution
- Step 1: Write the proportion equation
1,313,328.60 : 1,812,393.36 = 740,368.80 : x - Step 2: Convert to fraction form
1,313,328.60/1,812,393.36 = 740,368.80/x - Step 3: Cross multiply
1,313,328.60x = 1,812,393.36 × 740,368.80 - Step 4: Simplify right side
1,313,328.60x = 1,341,839,497,071.17 - Step 5: Solve for x
x = 1,341,839,497,071.17/1,313,328.60 - Step 6: Final answer
x = 1,021,708.88
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1.5x scale
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.