Finding the Fourth Proportional to 1,387,808.12, 1,914,588.76 and 929,070.48
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Solution
The fourth proportional to 1,387,808.12, 1,914,588.76 and 929,070.48 is: 1,281,724.66
Step by Step Solution
- Step 1: Write the proportion equation
1,387,808.12 : 1,914,588.76 = 929,070.48 : x - Step 2: Convert to fraction form
1,387,808.12/1,914,588.76 = 929,070.48/x - Step 3: Cross multiply
1,387,808.12x = 1,914,588.76 × 929,070.48 - Step 4: Simplify right side
1,387,808.12x = 1,778,787,896,857.05 - Step 5: Solve for x
x = 1,778,787,896,857.05/1,387,808.12 - Step 6: Final answer
x = 1,281,724.66
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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.