Finding the Fourth Proportional to 1,387,743.12, 1,915,405.56 and 903,465
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Solution
The fourth proportional to 1,387,743.12, 1,915,405.56 and 903,465 is: 1,246,990.07
Step by Step Solution
- Step 1: Write the proportion equation
1,387,743.12 : 1,915,405.56 = 903,465 : x - Step 2: Convert to fraction form
1,387,743.12/1,915,405.56 = 903,465/x - Step 3: Cross multiply
1,387,743.12x = 1,915,405.56 × 903,465 - Step 4: Simplify right side
1,387,743.12x = 1,730,501,884,265.40 - Step 5: Solve for x
x = 1,730,501,884,265.40/1,387,743.12 - Step 6: Final answer
x = 1,246,990.07
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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.