Finding the Fourth Proportional to 3,986,172,356.40, 5,979,258,534.60 and 1,225,442,649.60
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Solution
The fourth proportional to 3,986,172,356.40, 5,979,258,534.60 and 1,225,442,649.60 is: 1,838,163,974.40
Step by Step Solution
- Step 1: Write the proportion equation
3,986,172,356.40 : 5,979,258,534.60 = 1,225,442,649.60 : x - Step 2: Convert to fraction form
3,986,172,356.40/5,979,258,534.60 = 1,225,442,649.60/x - Step 3: Cross multiply
3,986,172,356.40x = 5,979,258,534.60 × 1,225,442,649.60 - Step 4: Simplify right side
3,986,172,356.40x = 7,327,238,421,283,637,248 - Step 5: Solve for x
x = 7,327,238,421,283,637,248/3,986,172,356.40 - Step 6: Final answer
x = 1,838,163,974.40
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.