Finding the Fourth Proportional to 1,427,490.30, 1,969,927.38 and 815,830.14
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Solution
The fourth proportional to 1,427,490.30, 1,969,927.38 and 815,830.14 is: 1,125,840.32
Step by Step Solution
- Step 1: Write the proportion equation
1,427,490.30 : 1,969,927.38 = 815,830.14 : x - Step 2: Convert to fraction form
1,427,490.30/1,969,927.38 = 815,830.14/x - Step 3: Cross multiply
1,427,490.30x = 1,969,927.38 × 815,830.14 - Step 4: Simplify right side
1,427,490.30x = 1,607,126,130,215.23 - Step 5: Solve for x
x = 1,607,126,130,215.23/1,427,490.30 - Step 6: Final answer
x = 1,125,840.32
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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.